IME, LGB people have been really heavily pushed into ‘allyship’. The straight people I know who even knew anything about the ‘trans’ phenomenon, tended to be do-gooder women, thrilled to have a new ‘most vulnerable’ group - ‘trans kids’, to pour their frustrated sympathies into, but the ones who stuck up for adult male ‘trans’-identified people, tended to be gay men who were familiar with gay transvestites in their circles, and with Attitude, Pink News and so on being really pro, they to not think too hard about.
Of the gay men I know, they’re generally very non-judgemental about unusual sex lives and practices, counting prostitutes - gay, straight, male female among their friends, there’s a blurred line between cyber-sex and porn, there’s a lot of humour about bizarre, kinky fetishes. They see themselves as allies with anyone ostracised and shamed by the forbidding religious ‘right’ and presume that anyone who disapproves of kink, etc, is probably a hypocrite. There’s not much understanding of female sexuality, (the instinct to avoid getting pregnant by certain men and avoid acts and behaviours that lead to vaginal infections, etc), they just think women are sexually repressed by the same religious forces that suppressed homosexuality, and women who object to men in our spaces are just right-wing, religious and sexually repressed or repressive. Like uptight mothers shaming their sons for exploring their gayness.
In my experience men can see women as ‘men without dicks’ rather than whole and complete entities, with different drives, experiences and needs from them, more so with gay men, and gay men I’ve found, can presume that women count them as one of us, as though the thing that defines heterosexual women is fancying men and not women, so we must feel absolutely fine with gay men in our changing rooms, toilets, commenting on our appearance, asking intimate and personal questions, etc, as we do with other members of our own sex. (I have to assert personal boundaries much more firmly with gay men than straight men). And because of this sense that women are essentially just dickless gay men, it would follow that there can be no good reason for women to have firm boundaries around our sex which excludes the trans identified among them.