Shelflife I think, mostly of us are deeply sympathetic for this man, but see no reason why he should sue the NHS.
He was a grown man in his mid-20s who had been having counselling for years, yet persisted in wanting this operation. At sometime, the doctors need to accept his decision.
Another difficulty nowadays, is that doctors, like everybody else are under strong and violent pressure from transgender activists - and that statement alone could be considered by this group as a sign of transgender hate. Look what has happened to J K Rowling.
However, there are doctors who accept this movement too readily and are inclined to accept those wanting this operation too readily in cases where caution should be exercised.