i can see this from all sides really.
Firstly, I see a really frustrated coach who is a notorious perfectionist, momentarily losing his cool. Stop the press.
Secondly, we can't really tell who that is aimed at, if indeed it is aimed at anyone. It's all conjecture and speculation.
Thirdly, if I was the subject of this sort of public ire, I would be extremely annoyed, especially as a seasoned professional.
Fourthly, we don't know what has been going on behind the scenes. It's not the first time MW has quit. Great doctor by all accounts, but sounds a bit precious.
Fifthly, Bayern is a very political club full of opinionated personalities. This goes back to the last point. Other people may be involved in this debacle.
And finally, it's easy to judge from the comfort of an armchair. When you live your life under the watchful gaze of TV cameras, it's hard not to ever make a mistake. Lots of people came in here quick to get the knives out, without knowing the facts. Smacks of personal bias rather than reasonable judgement.