I see no issue. First and foremost with Carr, you rarely see an HC (or any coach) get loud with the starting QB. It's a confidence position and ints are part of the game. They happen. You want your QB to forget them afterward, not get beaten down and not recover.
Same for the missed FG. Missing a field goal is a bang-bang thing, a poor plant, a poor snap, a poor hold, eyes flicking the wrong way in half a second. You rarely if EVER see a kicker get lambasted for missing one. Yeah, he can get cut if it happens to much--just like a QB can get benched for throwing too many ints. But these aren't positions or situations where ripping into the player does any sort of good.
So why was Hayball's different? Yes, Rizzi is an ST guy, but Grupe is an ST player too, so why?
B/c Hayball didn't shank a punt. He didn't even mishandle the snap or get it blocked. He did the dumbest imaginable thing that could have cost the team the game (if the return TD would have stood). And it wasn't bang-bang... it was very deliberate either lack of awareness, lack of discipline, or both.
On just about every punt coverage scheme in existence, and I'm talking from pop warner up through the NFL, the punter is a safety. He punts the ball and hangs back behind the coverage in case the returner breaks free. But Hayball inserted up into the coverage and not only sh*t on his ONE responsibility, he got in another coverage player's lane and prevented them from making the tackle.
I'd have lit his a$$ up just the same. It's not really comparable to a "normal" mistake like throwing an INT or missing a field goal. It would be more like Carr stripping the ball from Kamara's arms and the defensive picking it up and running it back for a TD.