That wasn't the responder's point. The point was that even people who do (at least by their own report) believe in the inherent equality and humanity of men and women (along with all other marginalized groups) can still be jerks. That's why we should focus on jerkitude, period.

The trouble is, most of the people who're "promoting a more feminist, egalitarian, diverse culture" are not in fact capable of grasping "the inherent equality and humanity of men and women (along with all other marginalized groups)". In fact, I've never met anyone who can full stop.

Turns out that everyone's very good at understanding the inherent equality and dignity of people who're exactly like them and hates it when people claim to respect them without putting the work in. They also want to be seen to respect others but only so long as they don't have to put the work in. The history of feminism, for example, is rather enlightening...