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.
You can install shit in Windows too, it is exactly the same case when grandma installs too many toolbars in Internet Explorer 6. No one is warning you there that you might be installing malware.
What I mean is that there are already curated repositories for each distro that can be accessed easily by the package manager. If you go outside of your package manager and repos, gloves are off, you better know what you are doing.
Regarding custom ROMs, since you brought it up and being a custom ROM enthusiast, there are still a lot of complaints, nastiness and pressure from the users similar to this. Installing a ROM has definitely a higher knowledge barrier and that makes you aware of the risks, also you will brick your phone before you are able to install a ROM... if you don't know what you are doing.
Finally, the developer here in this very lemmy post mentions that the OP of that bug report was working with them in order to solve the issue. The one on the screenshot was just a random dude unnecessarily being rude. Free software is usually delivered as is with no warranties, specifically small projects and libraries.
Thanks for coming to my TED.talk