With regards to CoHawk tonight, quite frankly, I thought the call on him leading up to the tech was hot garbage. It was a really poor call. An actual decent ref would have let him vent there even if he was warned ahead of time or evened out the foul by calling the flop as well. That was a tech due to ref's ego from knowing he was calling a terrible game out there and didn't want to be showed up. Should never have been called.
That said, yes, Coleman needs to dial it back, especially towards the refs. That will lead to technicals being called, and he almost certainly should have picked one up in a previous game at some point. There are ways to talk to a ref about a call you disagree with in a far better way and that could even elicit some positive calls in possessions to come. I certainly agree he needs to control the emotional responses, but this one shouldn't have been a technical. The good news is that this happened to him in a game we won handedly. Gotta let the coaches ride the refs