I don't think there is much of a point switching away from Arch if you like it but as others suggested already NixOS seems like what you are searching for.
Tf? I just say that it's probably mostly single user and small instances that will want something like that because they don't have the moderation caipabilities and might trust the admins of a big instance, not sure what your sentence is supposed to mean tho so could you explain?
This tool is kind of for those single user instances tho and while something like this could hurt Lemmy that's only the case if it's used wrong, I doubt big instances will start to share block lists because they have the resources to gather them manually!
I generally agree but the comparison can't be made that directly in my opinion because the small userbase of desktop Linux alone helps a lot there and the addition of repositories and Flathub do so too!
Definitely, you have to want to learn Linux fast and possibly a little more painful if you choose that path. Especially that SteamOS comparison annoys me, you spend basically all your time in a completely sandboxed environment with that (Steam uses Flatpaks for everything) so it has very little to do with Arch for most users!
They aren't unstable perse but there are always issues with some update and as a beginner with no clue about Linux I even struggled to solve Mints very rare issues, I think it's better to learn Linux first or that person might have a very frustrating experience!
Well and the courts in your corrupt autocracy, Turkey knows what I mean! ;)