Everything starts with the head person. Assistants only have so much ability to affect things because they are not the ultimate authority. I know this from my career. People know who has the power and who doesn't. Who has the ultimate authority. Doesn't mean assistants are meaningless, but they have less ability to steer the program direction than we might expect.
Agree with those saying talk is cheap, let's see what the play on the ice tells us. That said, I'd rather have exp players tell us they think this is a good move, not going "well, if they couldn't get anyone else...."