When I’ve had surgery, they’ve gone through the expected risks and benefits beforehand, and it’s all documented on a consent form that you sign.
They also ask you again, immediately before the procedure, why you want the surgery and what you understand the benefits to be. You get a copy of the form too. Being the NHS, it was old-fashioned carbon-copy paperwork in 2026.
Obviously I don’t know the details of this particular case, but I’d be surprised if they were taking it to court if there were a signed consent form explicitly identifying this as a known risk.
As for sexual function, I don't known how this works and have no desire to Google it. Obviously it wouldn't he the same but perhaps he thought they could construct a clitoris or easily achieve orgasms through penetration in the "neo vagina".
There's definitely men who think that's easy to do.