It has to do with his fanatical anti-revisionism (or what he considered "anti-revisionism") and massive ego. He did nothing to discourage the personality cult.
They seem to be rather peculiar for Gonzaloites in that they really like Sakai. Most Gonzalo people I've met dislike Sakai, sometimes even considering him a revisionist.
She is, or at least was, associated with Democratic Socialists of America.