The left is often extremely hostile and bitter towards men. A lot of these people grew up watching men getting portrayed as the source of all that's bad in the world on social media. An adult may be able to separate themselves from that kind of language, but I doubt that children can.
I'm sorry, but it absolutely does not help that we've intentionally created double standards where it's fine to trash entire groups of people as long as they're in the majority. It accomplishes nothing except pushing potential allies away into the arms of people who choose to accept them instead of constantly rejecting them.
The left talks a big game about inclusion and fairness, but its online spaces don't reflect that in the slightest. These spaces are often just an excuse for some traumatized people to bully others who they perceive as having harmed them. We never should have allowed this behavior and it's incredible how much damage it's done to the movement over the last 10-15 years.