If embarrassing people was a crime, the ex-partners who gave him the photos would be charged too. Those people are even more at fault than him.
It is a crime (disorderly conduct). See California Penal Code 647(j)(4). California Senate Bill No. 1255 made this into law.
> Any person who intentionally distributes the image of the intimate body part ... under circumstances in which the persons agree or understand that the image shall remain private, the person distributing the image knows or should know that distribution of the image will cause serious emotional distress, and the person depicted suffers that distress.
Convictions for the people who gave him the photos probably won't be news.
I feel like we've seen so many (genuine) cases of government overstep that we've been sensitized to see any crime involving the internet as "blown out of proportion." What this guy did was no better than a stereotypical Mafia protection racket.