Like all of us, he's acquired some bumps and bruises along the way, but I got they impression he felt he'd learned so much hanging around psychology forums, he felt superior in his qualification to be the shepherd, leading us where he could show his chops. But he ran into the madding, for shepherds, Cellar thread drift. Like he's got his points and rebuttals all stacked like snowballs, and the kids go to another yard.
But since I'm no psychologist, or shepherd, I'm guessing at his motivation, and may be way off base. For the same reasons, I enjoy the neat gems the thread drifts unexpectedly dig up sometimes.
In summation... damifino.