Probably "insult" wasn't the best choice of words, but definitely a lot of people (me included) are taking offense in the way sometimes legitimate concerns, questions and demands to deliver on promises are being addressed.
The team seems to have adopted a thin-skinned defensive position, shooting down as fast as they can any critique or call for improvements and specific answers on the critical issues, sometimes dissing the person, in what is clearly an unhealthy state of business.
Add to this a few self-appointed zealots, which don't allow any dissent, jump to the attack as soon as you step out of the drawing lines, and you have a recipe for this escalating tension that results in what we saw today.
In short, there was no reason to ban anyone and "technically" nobody insulted anyone. However, still you can offend without using insults.