it works for you because you got accustomed to it. cool! genuinely! but not everyone is a power user, not everyone will want to sift through documentation to find out how to do the thing they want that's easy to do with word

from the non-techy people i've spoken to who've used libreoffice, they all agree that it's worse than ms office because it gets in the way more. it's harder to do stuff, because it's less intuitive to them.

people in 3d modeling use blender. people in audio production use audacity. people in office work and schools, usually, do not use libreoffice, because if you can afford ms office it's just better for them. maybe that will change with office now being ai-infested webviews held together with gum, javascript and ever increasing subscription prices... then again, that hasn't slowed down adobe

imo the upcoming audacity 4 is an incredible example of open-source ui redesign, and should be an inspiration to everyone. the ui is sleeker, faster, easier to use, and yet it's still familiar to existing users! but you can do good stuff without recreating the whole ui from scratch like they did, of course

LibreOffice is always this cluttered. It's an outdated mess of a GUI.