Some people think MN is transphobic because they assume that transwomen are all vulnerable gender dysphoric gay men who've had all the surgery. That's understandable. The transwomen of the past were mostly like that.
But this is no longer true. There are currently only a tad over 5,000 trans people who have obtained a Gender Recognition Certificate or GRC. A very small, vulnerable group.
However under Stonewall's greatly widened trans umbrella there's now an estimated half a million people who class themselves as transgender.
These days very few transwomen are dysphoric. They don't feel distress about their sex. And for that reason very few make any changes to their bodies. About 90-95% of transwomen are fully male bodied. Oh, and most of them are sexually attracted to women.
I am not a lesbian, but it was lesbian rights that led me to this debate back in 2012. Because this huge uptick in men who identify as women and who are sexually attracted to women has led to a situation in which young lesbians in particular feel under siege. The older ones are less affected because they've mostly paired up. It's the ones who still need and use lesbian groups and social spaces who get the hassle.
Men who identify as lesbians put relentless pressure on these young women. In university LGBT socs an accusation of transphobia can be social death, which means a lesbian rejecting advances from someone with a penis is a very brave and risky thing to do.
How regressive is that? Are we prepared to accept that the idea that lesbians don't do dick is transphobic?
Bottom line: sex matters.