(Apologies, having read this back it's really long and I haven't said everything that I wanted to but we'll be here till Christmas if I do. TLDR: I was a gullible idiot)
So, possibly outing myself as a thickie here (although I suspect I've posted much of this before) but here goes...
A very old friend has a trans sibling. Said sibling transitioned many, many years ago. The friend shared this info shortly before her wedding, knowing that I knew her sibling in their previous incarnation. I know this sibling had mental health issues as a teen and that the family would have done everything possible to get the sibling well. But to no avail and the sibling ended up transitioning. Having seen and spoken to the sibling at the wedding, I accepted that this person was now a woman. They are very delicate, feminine etc etc.
Then a few years later TWAW became quite the slogan. And of course because in my mind the word transwomen refers to people like my friend's sibling, this meant all TW are indeed women. No critical thinking required.
The inner feeling of wanting to be the opposite sex felt reasonable. Especially as someone who has never felt particularly comfortable in myself.
Fast forward a few years and an old friend of DH who had always been into dressing up in women's clothing suffered a breakdown and had some devastating things happen to him. All of a sudden he was transitioning and had "always" wanted to be a woman. Despite having clearly stated in the past that he just liked dressing up. Hmm, ok thinks I - linking back to my friend's sibling - [insert pseudonym here] - is now a woman. TWAW after all. It never occurred to me that this wasn't the case.
Then during a lockdown drinking zoom meet up between DH, his mate and a couple of others, I heard the mate talking. Sounding very, very blokey. Not just the way he spoke but what he was actually saying - behaving in a way that very few women do. All of a sudden it was like a light went on - this was no woman. This was what he had always been. A man in a dress. Absolute epiphany. I had blindly just accepted that once he uttered the magic words, that was it, he was a woman. It had never occured to me that this wasn't the case. I didn't accept what I was told because I was scared of the consequences of questioning it. I genuinely believed it (or rather unquestioningly believed)
Then I started looking into it further, rediscovered Mumsnet and the rest is terf history.
I think there's a combination of reasons why people (particularly women) "believe".
Women know how it feels to feel uncomfortable in their own body from experiencing puberty. So the notion of someone being born in the wrong body resonates and when you've felt like your skin isn't right on you, why wouldn't you be kind to someone who claims to feel this intensely enough that they want to "be" the opposite sex. I just don't think people question the mantra. I never did. People wouldn't say it if it wasn't true. Would they? And I think a lot of people don't understand Aygeepee. Especially if the only TW you've come across are the delicate type just trying to get on with their lives, rather than the hulking great brutes in thigh high boots and pink rara skirts who are more common.
During my enchantment (and I do feel that it was like being under a spell) women in prisons, abuse survivors in DV shelters, women in sport, and women of faith weren't on my radar. At all. Because when you swallow the lie, TWAW, that means all TW regardless of the situation. It wasn't even the case of not wanting to roll back on my beliefs because of discomfort, it was just a truth - TWAW. But once you see the trick for what it is, you can't unsee it.
Having said all that, there's so much info in the public domain now, that there is no excuse for any adult to be as naïve as I was. A large number of women currently parroting TWAW can't possibly believe it the way I did. It has to be self-preservation and fear.