People are talking to people in real life less and less these day. The people they do talk to tend to be of the same gender, this was a thing before the Internet but the Internet has made it worse. Combine that with algorithms where the first thing they learn about you is your gender and will feed you content accordingly, peoples view of the opposite gender becomes more and more distorted. So the terminally online people, that also make a lot of the content on the Internet, tend to become misogynist or misandrist.