Another copycat change to get the same crappy non-ergonomics in unrecognizable controls as the others. Can we please fast-forward all the UI circus to arrive at something usable again? Pretty please?
And in GNOME more or less everything in the title bar can be interacted with.
And it's mostly symbols implying intractability.
So in difference to most flat design approaches I'm not sure this decreases usability tbh.