I'm once again begging people to understand dog whistles. In the year of our Unix Epoch 52, any time you find someone who is an Online Champion of Free Speech, pull off the Scooby Doo mask, and it's someone demanding their right to spew racism, transphobia, antisemitism, homophobia, and any other fascist garbage.
You don't need to play devil's advocate. The devil has more than enough advocates on the internet. I don't need to hear your nuanced take about how freedom of speech protects marginalized people too. I know every time I've invested emotional labor into trying to listen to yet another impassioned free speech whine, it turns out to be someone defending fascist viewpoints. It doesn't take Agatha Christie to figure out they're really only interested in the freedom to protect those who want to preach hate, and will mysteriously be nowhere to be found whenever a marginalized person is being dogpiled for existing.
If you choose to associate with "free speech" people, understand when marginalized people don't trust you.