I mean, I'm pretty sure that the advertisers that have quit MN over this don't advertise on Kiwi Farms either.
It's not really about the advertisers. The advertising is being used as a tool to try to silence women, but that's just a tactic.
It's the actual posts. If a man posted a message on a chat forum saying that his wife had decided she wants to identify as a man and that she wants him to acknowledge that he is now in a homosexual relationship, do you think posters would come along and tell him that he must be kind and let her be her true self? That he should 'explore' with her, and take her shopping for men's underwear, and teach her how to shave properly? I doubt it. Yet that's what happens to women.