I’d be perfectly fine with a Conte or Inzaghi. Even Gasperini or Spalletti though I’m not a fan, especially of the latter. All of them have some big flaws to go alongside their strengths obviously, but they all have class, dignity, and the gravitas that should be required to be a Juventus coach.
I don’t think anyone believes Sarri is an outright bad coach. He’s a decent/good coach with some good strengths and some big flaws. But he’s also a classless, chainsmoking, bum who I want nowhere near this club because of that.