JY is a one off. Not representative of the normal true trans.
Simply not true. There are MANY.
One of the very first truest of true trans recognised with an early GRC shortly after the GRA became law, was the case of the convicted murderer and rapist "Karen Jones". Not to be confused with "Karen White". Another male rapist in women's prison.
Jones killed a man, was imprisoned, released, and almost immediately attempted to rape a woman to get put back inside. Whilst inside, he was awarded a GRC. Not content with his GRC, he demanded to be relocated to the women's prison in order to be considered to be "living as a woman" to get his operation. (He'd already been considered to have 'lived in role as a woman for two years' to get his GRC. But he argued he had to do it in a woman's prison to get his operation) The secretary of state denied him the transfer, so he took them to appeal and won the right to be housed with women under the guise of "I have to, in order to get my operation, even though I'm a murderer, a rapist, and already have a GRC"
Its immaterial whether a man amputates his genitalia, or does not. Whether he has a GRC, or does not. Whether he is a known rapist, or is not. Whether he takes hormones, or does not. Whether he's dangerous, or is not.
There exists no magic portal for any men to become women. There is no "true" trait that overcomes this reality for any man. All men are men. Forever. There's nothing "true" in any man that renders him an honorary woman, no matter who he is, what he feels or what he does.
We perpetuate a dangerous myth when we hold up 'becoming female' as if it was a prize for men who perform, or threaten, or have drastic procedures, or gain ridiculous certificates.
It's way past time we stopped offering up women as sacrificial lambs for men who demand we not treat them like other men.