It was Pipewire what done it. Pipewire collided with jeff's massive ego. The ego is interested in two things -- looking good and being right. Who is right is not as important as what is right, but once the ego gets involved it can be hard for a person to back down.
Jeff had posted for years how shit JACK is. He was wrong, and Pipewire made his position untenable. The solution to the Linux sound server issue was ... another sound server. That's the way it is, and it seemed to drive him bonkers, causing him to flail around in an attempt to cover up the fact that he had been posting garbage for years.
A better outcome may have been if he had been able to stay and behave himself, but he couldn't do that, as he had to be right, even when he was wrong.