I think changing the names of the levels was stupid, at best.
I have heard people describe themselves as an "amateur."
I have heard people describe themselves as a "professional."
I have NEVER, EVER heard anyone describe themselves as a "platinum."
This change has provided confusion but NO value to anyone but the marketing dudes who got paid for pitching the change.
Better would have been "King." Or "Emperor." Or something else a bit less inane than the name of a precious metal. "Platinum" is so five years ago.
There was no good reason to change. 'Tis sad no one in the room said, "Not a good idea."