It’s not “linux”’s job to be userfriendly, it’s up to the distro. Look at android, steam deck and chromebooks, three very userfriendly linux distros. Now we just need some billion dollar company to do what google and valve did with those for a desktop and we’re good to go.
That’s exactly what the vast majority of AUR packages do already? You can also apply modifications to the compilation process if needed.