I sure as hell won't. I have a pretty strong stance towards Coman. I was surprised actually how good he did at Bayern. There is some truth in your post though.
I don't understand why they'd be fickle. Coman is someone who tries a lot, is very active, but has little end product. Mostly because his decision making is awful. This means that maybe he'll decide one game and score twice, but maybe he'll screw up the next. He's great to have on your bench as anything could happen when you put him on, but I understand the decision to let him go.