The clear answer is yes. This is exactly like the people who say they won’t be allies anymore if we LGBT+ people aren’t polite enough.
No halfway decent person who isn’t a steaming pile of excrement would be deterred by such a protest. That user’s take stems from discourse specifically designed to shut down protests, and it’s imperative that we do not let it work.
So no, the “dude” doesn’t have a “point.” It’s all horseshit. Shut them down immediately when they start flapping their pie hole with that shit.