I go interrupted so am going back to what I started to type.
Cases of sex by deception when it is a trans woman and a biological male dont get prosecuted because very few men would admit that they had been deceived.
In the same way as many men dont report being raped (for different reasons than women not reporting).
However in the US, and I think there was a case here, men have used the sex by deception as "mitigating circumstances" where their response to the deception is violence.
There were cases in the US where this was accepted as being a plausible reaction, ie the male legal system related to men who feel they've been duped, lashing out.
However, TRAs were concerned that if this was accepted in the legal system that it was deception for a trans woman to not reveal that status, would in fact acknowledge that it was a deception to say that a trans woman is biologically female.
This is why TRAs started lobbying for trans people not to be made to reveal their actual sex, because to do this means they are having to acknowledge they haven't if fact changed sex.
Does anyone remember all those surveys and studies group financed by that well known funder who is always helping to push the trans agenda.
In fact there was a very interesting thread on FWR some time ago, when I was just a reader rather than a contributor, and because of some of the links posted or ... the thread got deleted.
I remember it more because it was the first time I had really thought about the concept of sex by deception rather than someone lying about their marital status, or whether they had had a vasectomy, but in relation to trans men and women.