looks like rendering adblockers extensions obsolete with manifest-v3 was not enough so now they try to implement DRM into the browser giving the ability to any website to refuse traffic to you if you don't run a complaint browser ( cough...firefox )
here is an article in hacker news since i'm sure they can explain this to you better than i.
and also some github docs
They’re right about browsers, but jumped the shark on keyboards.
Custom keyboards come with some rules and limitations for obvious reasons, but they’re by no means the system keyboard in disguise like how browsers are all WebKit under the hood.
Here’s documentation on custom keyboards: https://developer.apple.com/library/archive/documentation/General/Conceptual/ExtensibilityPG/CustomKeyboard.html#//apple_ref/doc/uid/TP40014214-CH16
Yeah that’s what I thought, it’s not really comparable. Doesn’t explain why they all suck so bad compared to Android’s custom keyboard though