If the team was as good as Loomis believed then things probably would have turned out different for him. It wasn't and Carr isn't the kind of QB to elevate others play around him.
Personally I don't think he handles himself well in the face of adversity. The fight with McCoy comes to mind and him yelling at Chris Olave. It's just a bad look to see that kind of attitude coming from anywhere but especially the QB position. And while no one should confuse Michael Thomas for being right in the head he clearly hates Carr with a next level passion.