Strange that.
In the 50-60's if 'men' wore female clothes they were cross dresses or ->-bleeped-<-s. If 'they' wanted to change 'sex' they were transsexual. Which I think was how woman who had undergone surgery were referred to. I never realised TG was supposed to be insulting. I thought it was to clarify,Oh well.
I do see an increasing use in medical terms of XY-female and XX-male. Which to me is more logical.
Cindy an Xy-female