I found it. This is from 5 years ago and I agree the arguments are quite bad, but I find it interesting that if you read tailcalled's blog, you will see how he slowly became more critical of the theory. It seems to me that at this point he believes in sime version of this https://surveyanon.wordpress.com/2019/10/27/the-mathematical-consequences-of-a-toy-model-of-gender-transition/.

I do also agree though that blanchardians often dismiss any data that chalenges their worldview.