Heartfelt responses all; patience, candour and earnest engagement very much appreciated.
If I may: Many of the above comments betray a classic damned if you do, damned if you don't logic.
Either: Trans women are inherently dangerous predators with transparent psychological attributes of maleness, or: there are no psychological attributes of maleness because gender isn't real, and all behaviours are constructed. Which is it? These can't both be true.
If we are talking about learned socialisation, then I profoundly agree; toxic behaviours imprinted on people by the patriarchy are indeed astonishingly shitty. However, if I express the experience of having been victim to them, I'm appropriating womanhood and they can't possibly be real - despite them demonstrably being realities that occur. Are experiences only real if the brain that is experiencing them is pink, or has the magical genetic gender essence? Do I even have the magical genetic gender essence? It was repeatedly implied by clinicians that they suspected I had PAIS due to the low intensity of pubertal changes I'd presented with. I never got myself tested, as it didn't seem relevant, but there's a not insignificant chance that my magical Genetic Gender Essence field is compromised.
Stereotyped gender conformance behaviours are problematic reinforcements of patriarchal oppression imposed on women to silence and control them, apart from when trans women defy gatekeeping and don't exhibit them, at which point they're exhibiting inherent markers of maleness that show they aren't 'really' trans. What IS a real trans person? What's the diagnostic criteria? Does it involve stereotyped behaviours?
Either: you can always tell, I have unmistakeable physical male attributes that make women inherently uncomfortable and which people were always secretly cowering in fear from, and everyone I've ever met and interacted with including people who have by default included me in explicitly trans-hostile private spaces while sharing their horrendous jokes and memes in good confidence has just been playing along; or you can't always tell, I'm passing invisibly and thus a duplicitous infiltrator who is harming women by making them feel unsafe ?retroactively? if I later out myself. Which reality is it? These can't exist simultaneously.
Discussing this subject is deeply fraught and it's hard not to get into an argument of contradictions when it comes to definitions.
Even a moment's consideration will, however, show that this subject is a great deal more complex than credit is being given here; while an extremely small percentage (extrapolating GIDS admissions from the 2000 to 2015 period gives a very rough, optimistic estimate of 750 people spread across a range of ages, with varying degrees of visibility) of trans people with degrees of pubertal suppression have entered society so far, a new and vastly more numerous generation of young people is starting to follow, often starting at an even younger age, sometimes having had puberty entirely suppressed. They've never experienced male adulthood and have been experiencing living under the patriarchy while percieved and treated as female from ages six and even younger. And this goes doubly so for trans guys who, without wanting to throw shade on several of my mates, demonstrably exude trappings of male socialised privileged behaviours and make women inherently nervous by being present in their spaces - and this will again only increase with time.
While I appreciate cleaving to one's principles and repeating pithy axioms while celebrating your apparently flawless transdar is a great way to shut down attempts to have serious and necessary conversations about experienced realities, I can already personally refute the 'we always know' argument with twenty years of being, by default, included as a participant in the secret unrestrained transphobia treehouse that exists when we don't think trans people are around to hear us. You do not always know. This already demonstrably falsifiable assertion is soon going to slip beyond even the vaguest bounds of reasonable doubt as the next generation comes of age and disappears into society like we did.
We are going to have to find a more elegant way of defining maleness and femaleness as presented and experienced within the world. Even the transfinder general with flawless laser-sharp vision will not be able to tell on visual inspection if a person is trans or not, and certainly not while waiting in line for the loo.
Third spaces will not work for these people. It's ludicrous to expect trans people who've never spent a moment of their adult lives living in their originally assigned gender roles to casually out themselves every time they need a pee; and it's evidently not going to happen anyway short of forcing everyone to carry toilet passports.
I've noticed frequent mentions in this thread of posters who were previously willing to accept the presence of 'classical' transsexuals in single-sex spaces and who have since adjusted their stances, often citing the entitlement and demands for acceptance of a younger generation.
What changed? Is it simply that trans people are no longer meek, timid outliers and social outcasts asking to be let into the sisterhood so they can quietly cower in the corner - is the issue one of entitlement and demands?
Has the nature of trans people fundamentally changed and you feel you can no longer trust anyone? If so, what was it that changed? Do you feel that you changed - you consciously altered your stance - or that your stance is actually the same, and it's just that statistical weightings mean the majority of those you encounter don't meet it?
What differentiates, in real terms, a 'classical' transsexual in a historical sense, from those who don't meet this definition in your eyes?
I'm trying to understand what went wrong, and what we can do to fix it.