this myth that he floats really really really needs to stop..his issue isn't floating it's in transition he gets caught too close to the puck carrier or he miss times his zone entry...it's all in his timing. That will get better....but please stop with the floating stuff it's getting really annoying. Does his board work need a bit of work probably but the kid back checks, he takes his man, he doesn't leave the zone early..He's been great defensively.
To be honest questioning his compete level is quite insulting really. Imagine going to your work and watching you and then saying....you know you need to compete harder, get after it more.
You don't produce the way he has and get to the level he's at, at the age of 19 with a crappy work ethic or compete level. Give your head a shake