Mnnn...
I'd dismiss the Yuri-Piotr comparison. It's at least a reach because Yuri's tenure was before on-court coaching so there was never an issue of him harranguing Maria during breaks.
Dunno if he would or not. The mouths hate Yuri in part because he took a hand in terminating Lansdorp--one of their pet "tennis bums". Soon as Michael settled in, however, Yuri backed away from public coaching. He HAS been sighted in the role privately & continues so.
Far down the line, we may find the one legitimate comparison is as a business manager--where Yuri, of course, had far more to work with than Piotr. lol
"That's the way the world works... right now." --Maria Sharapova at 17