What qualifies as "expert" setting can be very divisive.. for me, it would be removing this menu entirely. Or even switching from KDE to sway or similar ^^U

But if I was the kind of people that do use this kind of menus I would probably find that kind of indication useful. It helps finding the category the app you just installed belongs to. If you install an educational app/game that teaches programming by giving instructions to a turtle in order to draw a graphic/picture (I think I have seen something like that before): which category should it be at? games? education? development? graphics?