Vinegar
I avoid Ubuntu because Canonical has a history of going their own way alone rather than collaborating on universal standards. For instance, when the X devs decided the successor to X11 needed to be a complete redesign from scratch companies like RedHat, Collabora, Intel, Google, Samsung, and more collaborated to build Wayland. However, Canonical announced Mir, and they went their own way alone.
When Gnome3 came out it was very controversial and this spawned alternatives such as Cinnamin, MATE, and Ubuntu's Unity desktop. Unity was the only Linux desktop, before or since, to include sponsored bloatware apps installed by default, and it also sold user search history to advertisers.
Then, there's snap. While Flatpak matured and becoame the defacto standard distro-agnostic package system, Canonical once again went their own way alone by creating snap.
I'm not an expert on Ubuntu or the Linux community, I've just been around long enough to see Canonical stir up controversy over and over by going left when everyone else goes right, failing after a few years, and wasting thousands of worker hours in the process.
I worked at a sandwich shop and had given my two weeks notice a few days earlier. My manager came to me and asked me to clean up the bathroom...alright. I could smell it before I even opened the door.
I told my manager I'd clean it if he'd still give me the employee discount after I was gone. "Done". That's when I knew it was really bad.
When I opened the door I discovered someone had ass-blasted the bathroom. I'm not talking about blowing up the toilet, they did that too, but they had dropped their drawers and point-blank diarhea shotgunned the pipes under the sink.
My manager didn't honor the employee discount after I was gone, either.
You've listed a lot of good reasons why open-source for business isn't used more frequently, and they're all consistent with my experience as well. Are you familiar with any consulting companies / vendors who DO advocate open-source solutions?
I've been considering starting a FOSS MSP / FOSS B2B consulting firm, but I've consistently come to the same conclusion that the tech industry and business culture here are almost innoculated against open-source. If you know any firms that DO recommend open-source solutions I'd love to check them out.
Karl Marx was a philosopher and economist. He wanted to understand class relations and social conflict, so he developed theories to explain why things are the way they are. A Marxist uses Marx's theories to understand why the world is the way it is.
Marx had a lot of theories, such as historical materialism - that all history was primarily motivated by socio-economic forces, not supernatural forces or grand conspiracy. Marx wrote that the dominate socio-economic system running the world in his time was capitalism/imperialism which fueled capital accumulation through exploitation and alienation, and used technology to further this process with imperialist wars for resources etc... He also focused on class struggle between those with the most resources, and those with the fewest resources - the bourgeoisie (capitalists) vs. the proletariat (workers/peasants).
Marx went further than trying to explain why the world is the way it is, he also theorized on how humanity could replace the dominate socio-economic system, and what a non-exploitative non-alienating socio-economic system might look like. "Marxist" refers to anyone who believes Marx's theories are valid and uses them to understand the way things are.
Gnome provides a more consistent user experience because Gnome apps usually have fewer features and don't offer many customization options by default. KDE apps usually have a lot of settings and customization options, but the user interface might be a little less intuitive or you may have to search in a settings menu to find what you're looking for.
In my experience Gnome is pretty, intuitive, and well integrated, but I tend to settle on KDE Plasma because KDE apps often have more advanced functionality and more options for configuration. If you're the type who likes to explore device/app settings to configure things exactly how you want, then consider KDE Plasma. If you'd rather have a minimal but consistent experience out-of-the-box without any tinkering then Gnome is probably the better choice for you.
It is supposedly a personal moral failing every time someone drives too old, too tired, or too impaired, but if trains, busses, & walking were the default ways to get around then this chronic societal problem would diminish dramatically. For the vast majority of US citizens busses, trains, walking, biking, etc are not viable options because US infrastructure & city planning overwhelmingly neglects everything but the automobile.
Incompetent driving is rooted in systemic failures, not personal moral ones.
Check out the Fairphone 4/5 running /e/OS. To get a "stock" phone that comes degoogled and ready to use, no tinkering required, you can buy a phone directly from the makers of /e/OS/: Murena
Take a look at OpenSCAD for modeling, if you have any programming/webdev experience you'll be making simple parts in <5min. It's the best for making & sharing designs that are easy to modify. Just yesterday I was going to print a phone stand that was a little too narrow, and by changing a single number variable it fit perfectly.
Companies DO analyze what you say to smart speakers, but only after you have said "ok google, siri, alexa, etc." (or if they mistake something like "ok to go" as "ok google"). I am not aware of a single reputable source claiming smart speakers are always listening.
The reality is that analyzing a constant stream of audio is way less efficient and accurate than simply profiling users based on information such as internet usage, purchase history, political leanings, etc. If you're interested in online privacy device fingerprinting is a fascinating topic to start understanding how companies can determine exactly who you are based solely on information about your device. Then they use web tracking to determine what your interests are, who you associate with, how you spend your time, what your beliefs are, how you can be influenced, etc.
Your smart speaker isn't constantly listening because it doesn't need to. There are far easier ways to build a more accurate profile on you.