The other issue which could be a likely unintended consequence of the proposed changes to the GRA Act making self-ID legal is that a woman challenging someone presenting as a man who enters a sex-segregated space could be liable to being prosecuted for hate speech.
So women are in practice silenced because if we challenge the presence of a person who looks like a man in our sex-segregated space, and they claim they are self-identified as a woman, then the woman is in trouble.
If anyone’s seen clips or images of Danielle Muscato , or remembers the people defending the Greens “non-men” debate - a Green Party member who said that s/he “presented as a man but identified as a woman” (I kid you not 
) then you’d know that sometimes transwomen really do not pass.
And the proposed changes to the GRA would mean that there would be no need to pass - a man could simply say he identifies as a woman. He wouldn’t have to do anything else.