It focuses on this because this is, as it were, the front line of how saying you can identify as a sex puts women in danger.
Of course it is sex discrimination.
The Supreme Court gave one of the reasons for supporting FWS was that the trans should be allowed to invade sex based rights as DISCRIMNATION against the protected characteristic of sex.
No way is it the only issue, but the one that highlights the discriminatory result of the trans narrative.
That was why it became necessary to go to the Supreme Court because the trans narrative is that sex is not just biological.
Now that the highest court has said it is, then in each instance that women's sex based rights are being impinged on, the Supreme Court ruling can be quoted.
Sadly thousands of years of lived experience of their being 2 sexes, let alone what biology etc., has taught us didn't stop and number of people falling for the trans narrative.
One reason being that as discrimination against women is based on their sex, if you can argue that sex isn't real, then you cant have sex discrimination.
The TRA arguement would never have advanced as fast as it did if it wasn't built on the anti woman agenda of MRAs.
After how more convenient for them to have sex said to not be a real thing, when men as a sex class are accused of discrimination against women because of their sex class.
Sadly this trans activism is just at this point on history they way in which the male sex class is discriminating against women.