I mean "Linux" (as a user OS) should for the most part be a common experience, so if a very technical or very non technical person wants to do something or someone wants to support someone doing ordinary things using a different distro, they aren't on a whole new arbitrary mini-adventure full of surprises, except at the desktop level.

Mind you even though I've been running Linux for decades, I have lost the enthusiasm for the low level details and am happiest when I can use apt for everything and have the OS manage dependencies and updates. I see a lot of negative comments about Flatpack and my experiences haven't been great, so I don't know if it is comprehensively good and will solve issues like low level drivers (GPUs).