You'd imagine a professor in Psychology from Harvard would not hold a grudge for seven years over Google warning users about his hacked website and "tarnishing" his reputation. Apparently not.
He had a poor experience with them some time ago, and Googles behaviour in the last 7 years has been abysmal and seems to be getting far worse. eg likely re-inforcing his opinion.
Not really seeing why he'd "forgive" an entity with those circumstances.
If Google had instead changed for the better, maybe you'd have a point. :)
You're just talking in abstract terms. Let's be grounded in facts. His initial "poor experience" was that his website was hacked in 2012 and Google warned its users about visiting it.