I think that's a fair criticism for issues where Linux devs might be blind to the friction a lot of Linux distros come with, but I don't think it's universal for all devs and for all features, all the time.

Personally, although I'm not a Linux maintainer, I am a dev and I love doing work that makes UX better for everyone.

Yeah, I could agree to that.

If I could wave a wand, I would reduce the number of Linux distributions down to 10 and absolutely no more.

It is a ridiculous waste to have this many duplications of work and bugs, along with the lack of collaboration.