He needs to name the professor. It’s not helpful if he doesn’t and creates a belief that it didn’t happen. I always tell people if they get a threat through e-mail or voice message, go directly and quietly to law enforcement first. Don’t go to a message board, don’t go to social media, don’t go to friends or family. If it is a legitimate threat, there’s a public record and an investigation will ensue. If you are lying (like many of the “hate crime” hoaxes) you will be outed. If it’s real, the perpetrator is in deep trouble.
I’m sure Adams IDed the prof privately to the poobahs at Berkeley. When a person like SA decides to withdraw 100% of their financial support, they’d want that decision to carry maximum impact. I read Adams’ blog version of what happened, but without doubt there was an up close and personal version between himself and the Berkeley administrators re his financial about face. You can count on that.