You’re being weird. I thought you hadn’t read the article when you asked “Why did you invoke gender?”. They’re just talking about the same thing the article is.
That’s what the entire article is about.
Trans people: “Please don’t be rude to me. This is how you can be nice”
Dawkins: “My being rude to you isn’t the same as violence.”
Trans people: “Ok… why would you feel the need to say that unless you wanted to be violent to us?”
Dawkins: “You’re calling me violent! That’s policing my speech which is oppression!”