It's more about which category a particular specific software belongs. If a kid installs 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? games? education? development? graphics?

I personally don't use this kind of menus with categories, I prefer dmenu style launchers where you type to search what you need. But if I was the kind of people that do use this kind of menus I would probably find that kind of indication useful.