Does the viewport and component tree for gamemode and playercontroller has a function?

Hi! I wonder if the viewport and component tree of gamemode and playercontroller classes
have some usage. I understand they have those features because they inherit from AActor family and as actors they get those stuff but gamemode and playercontroller are special actors because by definition of actors:

image

and gamemode or playercontroller cant be placed or spawned in the world.

Its just curiosity.
thanks!
Dany

The UCLASS macro flags them as not placeable. There are also hidecategories additions which prevent them from i.e being rendered.

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so there is not real function for that part of the UI and its just residual inheritance