I wouldn't go that far. I think it's edible.
Supposedly the founder of CPK was instrumental in the history of California style pizza as the head pizza chef at Spago in Beverly Hills. I wasn't really into that style pizza at the time, but I do remember a series of Pacific Bell TV commercials in the 80s that included Alice Waters of Chez Panisse and Wolfgang Puck. Puck mentioned in the commercial that he asked Waters where she got her wood-fired pizza oven.
Anyone remember the broccoli pizza in Inside Out? I guess that would be California-style. We get that stuff at the Cheese Board Collective in Berkeley or one of several worker-owned Arizmendi Pizza locations. Pixar employees said they ate at Arizmendi Emeryville, although I'd think many have also been to Cheese Board. Arizmendi Emeryville even had a broccoli pizza one day when Inside Out was showing in theaters. Maybe some have been to CPK at Bay Street, but I wouldn't think they were particularly inspired by it.