Every group is discriminated against (most, whatever), just because women aren’t the only ones doesn’t mean it doesn’t happen.
For what it’s worth, I agree that post you initially responded to was emotionally charged and exaggerated. But responding with an equally exaggerated stereotype isn’t making you out to be any better.
I’ve been an officer in agaming community for a long time, and yeah we did have two girls in particular who fit exactly what you are talking about (so much so that on a camping trip we named our “gardening implement” we used to stoke the fire after her). We also had an elitist, hyper competitive male raid lead who literally divided our casual guild in two because of his rage sessions during raids when people messed up. We had a guy who made up stories about a girl to try and get her kicked because she refused his advances.
This is as pointless as the “why are tanks so full of themselves” threads. Stop painting with such a huge brush, you might find some of this is a self fulfilled prophecy.