I have to wonder if they shot this episode thinking that it could possibly be the series finale, as iZombie had not been picked up for Season 4 yet. Something about ending with Liv telling Ravi, “Don’t be a dick” after she scratches him seems like less of a cliffhanger than the previous two seasons.
You know that Boogie has to minimize stress for his weight loss surgery? He was almost going to cancel doing the cyberbullying panel in the first place because of that. Confronting Anita and her followers is the last thing he can do right now. It would probably lead to him having another panic attack, and having to postpone his surgery.