Ideally on the screen UI only those things are shown, that are relevant in the context.
And the context of beginners is very small, so they don't need to see advanced tools they never will use anyway. But for sure it is not the right way to also remove the tools for the advanced users who do need them.
But it is possible to make UIs that can be customized ..
If you do it like most software vendors do, by simplifying and removing functionality, you're moving the needle in the wrong direction.