Timely.
My daughter is currently doing a paper on “why the gender binary needs to go” where she argues similar things to the letter writer. I’ll forward this on to her - paper is due Monday so it might not get in.
And, there is hope for the future. Part of the paper was a presentation. What was supposed to be five minutes of presentation and a few question went for most of the hour because the discussion and questions were so very good. And respectful. For a lot of the students this was the first time they were introduced to the concept in a broad and yet detailed way - something bigger than bathrooms.