JBB gets too much shit here.
He's not a good coach yet, but he's not a bad coach either. Just like the team, he is learning to coach to win. Going to be growing pains there. Rotation wise, closing lineups, when to stick with lineups, when to change lineups up, etc. Those aren't just traits coaches have over night, takes some experience for that too.
But there is no denying he reaches this group of players. Guys are developing under him, the team plays their ass off, everyone is engaged even K Love, and the group seems to really enjoy being around everyone. That is coaching as well.
The question is does be progress past being the Cavs version of Mark Jackson, or is he the guy who builds the foundation for a better Xs and Os guys.
Only time will tell, but we can't have a shitty GM and shitty coach when the team is playing this well, especially when you consider the circumstances.