custardo the self id law is a perverts' charter. All of a sudden it is easy to get into women's spaces. Perverts and abusers who wouldn't ever live as a woman 100% and certainly wouldn't remove their cock and balls can pretend to be trans and get access. There are a hell of a lot of them around as every woman knows.
My biggest objection though is that it effectively enshrines in law that being a woman is all about makeup, tits, frocks and simpering, not XX chromosomes and a uterus. Thus a person with a penis can be a woman if he says he feels like what he thinks it is to be a woman, i.e. a stereotype.
If you as a woman point out that that's bollocks and he's a man, probably with some mental health issues, then you are guilty of a hate crime, same as if you were racist or homophobic.
That's an insane law to have in a country like the UK where we try to have fact-based laws. We don't teach creationism, we don't force people to go to church, we don't prescribe diet pills to anorexics.
Of course, we know some people believe in Adam and Eve, think non-believers are going to hell, think they are fat when they are thin and mostly they can carry on with their lives while believing such obvious falsehoods.
We are allowed to argue the facts and say no I don't believe that publicly though. Yet here we are with laws proposed where you are a vile bigot if you say "women don't have dicks" or "transwomen are men". It is fundamentally wrong.