I think it's hard for folks who weren't there to imagine how taken-for-granted anti-transsexual rhetoric was in 1980s feminism. There was no WWW and all I knew was from the books I read and the feminists I personally knew, but from what I could see, the disagreement was not over whether or not trans women were women, but rather whether trans women were dangerous enemies or poor victims of gender tyranny. Most of what I witnessed was the latter.