....waiting....
And on the other issue, of women thinking you're a woman, and if they think you're male being too scared to say so, there is a list of reasons why a woman would go along with the myth that a TW is a woman:
They're scared not to. This is especially the case in the workplace. There was a thread on here some time ago by a woman who had got into hot water and was at risk of losing her job after challenging a TW who was about to take tampons from a stash in the ladies funded by the women in the office (some of those details may be incorrect, but that was the drift).
They're being polite. They see in front of them a confused person who seems insecure or emotionally brittle, and they don't want to cause upset (women are strongly socialised to 'be kind'.)
They don't want a row. Say your DC turns up with her friends 'Lettie' and 'Lorenzo'. It is 100% obvious to you that Lettie is a new incarnation of Liam who DC was pals with at primary school, and that Lorenzo, new uni buddy, is quite clearly female (5'3", small framed apart from the wide hips, no Adam's apple, delicate jawline). 90% of parents will play along, and while they might ask a few probing questions once Lettie and Lorenzo have gone, and might express outright terfy views to their own DC, Lettie and Lorenzo will never know unless DC tells them.
It's not worth the hassle. I was once handed across by a member of staff in a shop to 'young Leo, he'll be able to help you.' Leo was quite plainly in possession of XX chromosomes. What was I going to do? Say, 'Fuck sake, Leo, those cross sex hormones gonna trash your body?' Or, 'Fess, up, buddy, you're a girl, aren't you?' Of course I wasn't.
Some or all of these reasons, and probably others, play into people apparently accepting the 'acquired' sex when they encounter a trans person.
Also, one of my DC has a trans friend who went off to a fairly challenging career, involving dealing with people who weren't going to feel much need to be kind, or subtle, or polite. I thought, this is likely to be a fucking disaster, and trans friend isn't going to stay the course. Trans friend didn't. I worry about that young person, I truly do: nice kid, caring, funny, a lot of surface confidence and a lack of maturity amd common sense.