Note that pg himself took a fairly surpising reactionary turn in right about the 2020/2021 timeframe this article describes. A guy who'd always been a left-center pragmatist suddenly was yelling in public tweets about the Campus Left's Desire for Cancellation and whatnot.
Those of us closer to the trenches never really did get the ire here: I mean, yeah, kids are intemperate jerks, but they've always been intemperate jerks. And the tech community... has always celebrated the idea behind the intemperate jerk and an engine for change and disruption. Let the ideas fight it out and pick winners and all, right? Suddenly these billionaires were all snowflakes looking to a political realignment to save them?
This article goes a long way to explaining why.