the law will eventually state, clearly, one way or the other, that trans people either are or are not their chosen sex and people who have a problem with that decision will be left to deal with their feelings.
The law in the UK already does this, in the Equality Act. As confirmed in the Supreme Court almost a year ago, it says very clearly that trans people are not their chosen sex, but are in fact their birth sex. Even if they have a GRC.
But it doesn't just tell them to deal with their feelings. It provides the protected characteristic of gender reassignment, meaning that a male who identifies as a girl/woman (or a female who identifies as a boy/man) should be treated no less favourably than one who doesn't. This means that trans people are protected both under sex discrimination law (e.g. a transman has the same protections as other females re maternity and abortion) and gender reassignment.
What it doesn't do is allow them to use facilities, services or sports (that meet the legal criteria to be designated as single-sex) for the opposite sex.
It really is that simple.
You may hold an opinion that this is unfair to transwomen and transmen. This opinion is equally as valid as those who have the opposite opinion if it is based on facts. If it is not based on facts, if it actually ignores them, it's as valid as an opinion that the earth is flat.
Some key facts here, already stated by PPs and summarised as bullets:
- nobody can change sex
- everyone is one sex or the other. Nobody is in-between the sexes, including people with DSDs
- the law allows for spaces, sports and services to be single-sex, if this is a proportionate means of achieving a legitimate aim (such an aim could be women's safety)
- the law recognises sex as birth-sex only
- statistically, males represent heightened risk to females (irrespective of the clothes they wear), more so in some circumstances than others e.g. risk of assault when in a state of partial undress. This means that there are circumstances where it is proportionate and legitimate to keep all males out of female spaces
- if one male is permitted into a space that has been designated as a women's single-sex space either a) that space needs to be reclassified as mixed-sex (so that all males can enter) or b) the male needs to be told to leave
If you read these facts and still have the opinion that TW should be allowed into women's spaces (but other males should be kept out), its status as being "valid" is a tough one to justify. Put bluntly, my opinion is that your opinion is no more valid than fiat earth theory.