When you're talking to an open source dev, just remember that they are literally giving you their time for free, and they are people who don't like to be treated poorly.
Edit: Just to be clear, I don’t mean any ill will toward the guy. He’s frustrated and he’s just taking it out in the wrong venue at the wrong people, but that doesn’t mean he’s a bad person.
Edit 2: The reinstalling he’s talking about is NPM. So just running npm install. It’s because he tried removing the node_modules directory, which is a reasonable thing to do, but it means you need to reinstall the modules with that command.
I can't say I've spoken directly to a dev in a situation like that, thankfully, but if that opinion were dominant, FOSS wouldn't be a thing. Destroying your data or OS is kind of a no-no, whether you pay for the software or not. Obviously, you can't sue the FOSS dev, but come on, it'd be amazingly shitty if they didn't even try to help if there's any evidence it's their fault.
Do most open source projects damage your computer? It’s obvious they put effort into making usable programs.
Of course not!