To enter into a marriage with somebody under entirely false pretences
Whittle has also advocated that the concept of bodily autonomy should be overturned, so that if you discover during sex that the person you are in bed with has in fact deceived you as to their biological sex, you should have no legal recourse. Because this 'outs' the person who has so little respect for you that they have tried to have sex with you under false pretences. Honesty, reciprocity, empathy, other people having any kind of rights - all under the bus.
You can seriously only believe in this megalomaniac world which divides people into the users and the used if you have the kind of personality/values and morals that would make the relationships board advise you to LTB and run. Far away. The hills are that way.