I think power users are not the main target of Ubuntu.

I have put my parents on Ubuntu (gnome) in 2013 to replace windows XP. My mother is 88 now. I think it is the perfect fit for her (dad is dead years ago).

I use ubuntu gnome because tweaking my computer is not where I want to spend my time. YOLO. Using a "mainstream" desktop that can be explained to "non specialist" has its benefits. I accept to suffer some annoyances and there is always a way to fix the most annoying ones by sacrificing time.