You are accused of being aggressive in the negative sense.

My sense, from a number of years of experience, is that you are prone to being needlessly contentious. You elect confrontational language on slight provocation. You do normally include substantive technical content, but it's effectiveness is lessened by the static around it.

You are not unique in this weakness. One can hope that by asking, you are hoping to discern more clearly and, perhaps, modify your approach. "Someone is wrong on the Internet" leaps to mind. Been there, drank the Kool Aid. I'd like to think I've gotten better (mostly).