I thought it was an interesting hypothesis for why I see women actively avoid the sort of debate spaces online that I seek out. They are all absolutely dominated by men and it doesn't matter what part of the political spectrum the particular echo chamber embodies, this happens in both leftist and right-wing spaces.
Is it sexist to say that women seek out conflict less than men? Mens' brains are literally doused in a hormone that makes them aggressive for many years of their development. Isn't it sexist, or just weird, to suggest that testosterone has no effect on mens' behavior?