He was given a warning and a second chance after the awful behavior in other bugs. When he failed to heed that warning he was banned. If you had read the report, you'd have seen that he had been given a previous warning. That's key information. Weren't you curious about the previous warning? Didn't it occur to you that he might have already been treading on really thin ice and continued misbehavior, even minor might be enough to tip the balance? It doesn't seem to me that you were. It seemed to me you were stepping up to his defense without all the facts. That's a dangerous thing to do because you might find that you're defending someone that's you'd rather not be.

"if you had read the report"? "weren't you curious"?

It should have been clear from my conditionals ("If this report is representative…"; "If other reports are worse…") that I was curious about the alluded-to prior history, and my analysis was contingent upon the (at the time unlinked) specifics.

The concern I still have is that this latest comment was so mild and non-insulting that one possible interpretation is that the previous warning(s) were working. He depersonalized his criticisms into the zone where, if judged dispassionately, they could be more more helpful than hurtful.

Now, you've also been quoting other incidents ("simians", "die die die") that might be more recent and salient. I can't find the context for those. (Searches only turn up this thread.)

But I am only opining on the exact comments and actions referenced here. I'm not defending any particular person (who I don't know), but one most recent comment. And I'm not criticizing a general policy of exiling recidivist assholes, only the act of pulling the trigger after a comment that, standing alone, is innocuous.

If someone else over the years posted a thousand comments with the same level of sarcasm and exasperation, but also the same level of actual useful info (and no insults), as in Mlynarik's most recent comment, would they get a ban? Or even a warning? I suspect not. They'd just be considered a cranky but useful bug reporter.