I know that I'm going to piss some people off by taking Richard Dawkins' side here; but, I'm used to pissing people off. Come at me.
Look, anybody who deals with serious moral philosophy knows that you are, at times, expected to suss out the actual reasoning behind the ethics of certain moral principles that many of us deem to be self-evident.
No, this doesn't mean that, "I was just asking a question." is always a valid way to dodge culpability. But, a question like, "Why is it wrong to eat babies?" is actually a valid intellectual exercise. We all know that it's horribly wrong; but, smart people often try to push moral values and moral thinking beyond the gut instinct and the gag reflex.
When it comes to a lot of the rhetoric surrounding the trans debate, there are a lot of people who are going so far as to say that we should be castrating prepubescent boys who say that they want to be girls. Biden's HHS secretary, a trans woman, wouldn't flatly condemn the practice of permanently physically altering young children.
Even more people just fall on to the argument that we should simply affirm whatever people identify as. If that's the stance that you're going to take, Dawkins' challenge concerning Rachel Dolezal is a more than valid challange to that particular mindset.
To my mind, this simply shows cowardice on the side of the American Humanist Association. It's easy to condemn and virtue signal. What's hard is making an argument. The right thing to do and the hard thing to do are usually the same thing.
There are two arguments around the trans debate that are deliberately ignored in the larger debate, which I think are the things we should be focusing on.
The first and most important, in my opinion, because it's an important issue in many of today's discussions, is that a person's gender identity is nobody else's business. Can't tell if that person is a man or woman? Why do you care, unless you want a relationship with them? Why does a license even HAVE a box for gender? To help identify people? If a person's license says female, but they look like a man, how does that help with identification? A person's gender, and gender identity, are not necessary things to know about them to interact with them. The people who NEED to know (our doctors and lovers) will find out their own version of the truth, when it's time, and the decisions they make about our identities will have little to do with what we've said, or what our paperwork says. If parents are castrating their children, that's abuse. If families make a decision to allow their son with gender dysmorphia to get sexual reassignment surgery, that's nobody else's business.
The second, and one that a lot of people hate me for saying, is that gender dysmorphia is a mental disorder. I know that trans people want others to 'accept' who they are, but you need to understand that you can't force someone else to accept your view of the world. People cannot see who you are inside, no matter how much you change your outside. Wanting equal rights for trans people is a noble goal that I support, but forcing people to accept you the way you see yourself is no different that forcing you to accept yourself the way everyone else saw you when you were born. If you want people to accept you for who you are, you first need a full understanding of who you really are, especially if who you are is not considered 'normal'.
It really baffles me that there is national debate about this. If you don't want someone that you think is a man dressed as a woman going into a public restroom with your child don't send your children to public restrooms alone! The weirdos and perverts have always been there, it didn't start (or get any worse) when you first saw RuPaul's Drag Race. Don't want 'men' in women's sports? First, real competition shouldn't be segregated, everyone should be allowed to participate. Second, set clearer definitions for your segregated leagues. Make participation in women's sports require an XX chromosome test. If that sounds unfair to you, that's because you're asking for special treatment. At the end of the day, what most trans people want is just to be treated like people. We all need to do a better job of recognizing our common humanity, instead of putting everyone into different groups of 'others'.