

Just cuz KDE works well on one distro, doesn’t mean it works well on others (idk why it’s weird like that). Another thing is that sometimes it’s nice when everything is setup out of the box with no need to configure anything except theme and wallpaper.
I get most Linux users like to rice the crap out of there systems, but sometimes you just need to get work down and don’t have time for that.
Also also, there are times software maintainers don’t always release versions for your distro and not everyone wants to compile things themselves, or rewrite scripts cuz author only made it with Debian distros in mind, or something.
Most people don’t know what a DE is or how to change it and training wheels are best kept on till they get the hang of all the things.
Everyone is different and learning should be in small steps rather than leaps. Always ask yourself, can my mom do this?