To me he talks like he's trying to be a zoomer or whatever and it gets old really quickly with me, but mostly I think he is absolutely awful when he calls games live. He has no flow to his speech, he interjects too many stupid asides about players in the middle of play (see buddha's post) and a lot of times it seems like he defaults to just saying the names of the player who has the puck without anything else so it just sounds like he's listing people off of rosters. In my mind ESPN clearly sees him as their worst PBP too because he seems to get saddled with awful broadcast partners and games.
I liked him when ESPN only gave hockey a token like 8 minutes on Sportscenter with him talking because he seems genuinely passionate about it. As soon as he had to do any more he started to annoy me for whatever reason. I straight up mute broadcasts and listen to music if he's doing play by play.