I guess because they're complaining to the professor about it? Nice attempt to turn the table though, with social skills that subtle I bet you'd fit right with the bozos in this class.
Any sizable group of people where there is fun occurring, will inevitably have someone complain because they aren’t included. It’s impossible to please everyone.
It also can happen if there are actual problems too!
But without looking at the situation, good luck figuring it out.
Modern feminism is very odd, and is the reason I no longer call myself a feminist. The gist appears to be that men - and anything associated with masuculinity - is not ok, unless you're attractive. In addition, women are independent but also need constant protection, assumedly from said attractive masculine men.
It's not hard to see how incel culture rose up and why people like Andrew Tate have so much support. Turns out chickens come home to roost.
I think we can assume that most freshmen did not share that explicit purpose for taking the class.