//…as Ray Davies sang"girls will be boys and boys will be girls".//
You should study the rest of the lyrics, ynnaf:
“Well, I'm not the world's most masculine man
But I know what I am and I'm glad I'm a man
And so is Lola”
And thereby hangs the rub. It’s one thing for a man to declare himself a woman. He could call himself a dog but he won’t be allowed to enter Crufts. But it’s quite another for a government – even the Scottish one – to indulge him by legalising his fantasy.