Normally I'd say he's too much of a narcissist to ever contemplate an heroing.
On the other hand, his entire raison d'être is he's a massive pervert that gets off on forcing women and girls to look at his genitals. While the surgery would have stymied his masturbation attempts, his "clitoris" falling off is forcing him to confront that he has permanently destroyed his capacity for sexual pleasure. I guess there's always the elusive prostate orgasm, but HRT shrinks the prostate and as far as I'm aware Yaniv doesn't shove things up his ass.
Whether or not he an heroes is probably contingent on if he's able to still get some form of sexual fulfilment from mere abstract situations and thoughts.
He might be able to get some sort of cosmetic procedure done, but there's no way in hell he'd be able to get anything transplanted there. Penis transplants have only recently been successful and require many hours of complex surgery and a usable penis to be transplanted - they're not going to waste that on shaving a viable penis head down to clit size for Yaniv, if it even would be feasible to connect it to whatever horrorshow is going on down there.
Yaniv's basically never going to have an orgasm ever again, and there's nobody he can sue and no surgery he can get to ever bring that back.