The author perhaps implies, but doesn't outright state, what seems obvious to me: Rodriguez got defensive and spread FUD about the critic because he was worrie

The author perhaps implies, but doesn't outright state, what seems obvious to me: Rodriguez got defensive and spread FUD about the critic because he was worried about being exposed as a phony. (At least as far as the surprise setups and "where does my talent really lie" aspect). Pretty simple and straightforward. Most of those adoring followers probably know it in the back of their minds too, so defending him helps defend the shared illusion. And using anti-gatekeeping as the righteous rallying cry is especially brilliant & effective. A good internet mob needs that SJW aspect.