not involved into gzdoom in any way, but it looks like too much of mobbing, while the project leader left only one one-liner of a reply.

Graf has a history of being a major dick, and hyper controlling.

Well, not in the github issue mentioned in the article. If I was a major dick and a control freak, I would delete everyone's comments and ban them immediately and permanently.
Maybe you are right, and the guy's dismissive reply was the last thing that made everyone lose it, but come on.

In my opinion, the internet nowadays is a highly hysterical environment, where people argue, fight, cancel, burn bridges between each other over nothingburgers.

To me it starts to look like a conspiracy where something or someone ruins everything by any means, so we can't have nice things. Crazy, I know.

The internet has became a place that I am mostly avoiding.