Was out for dinner this evening with some friends. Turns out one of them (husband of my childhood friend) runs the dei network for a big U.K. firm. He is very senior there. They are a gay couple so they understand the perspective of facing discrimination etc. I asked whether the firm was linked to stonewall. Big yes. I said I thought they are toxic. And that I would like to separately talk to him to make him aware of how some women would definitely be feeling at his work but would be too scared to say openly. He called me a terf, said that the risks are overstated and that because he has a trans woman helping him lead the network that was already covered. I explained that she didn’t understand in the same way that I could explain as she isn’t a woman in the same way that I am a woman and he just totally dismissed me. His husband (my friend) was trying to broke the peace and suggest we had a conversation offline over lunch or something. I explained the legal risk I’m not following the equality act 2010 and that I would be happy to chat. I won’t follow it up but if he does, what can I possibly say to him? I said he is male and therefore doesn’t have a reason to get what I am trying to say and he asked me not to exclude him. Is it utterly pointless trying to chat to him?