Yes, 100% this kind of thing happens all the time. I think the split is in attributing it to "masculine evil", what I've seen firsthand is more like simple neglect or thoughtlessness.

I attended a small local conference a couple years ago that had forgotten/didn't bother to order any women's t-shirts. It wasn't like the organizers had a meeting and said: "lets exclude women" - they just kind of assumed that everybody could wear the same mens cut of shirt and it would be fine.

To their credit, they were fairly mortified when it was pointed out.