I honestly have no sympathy for all the boo hooing.
Women with trans identities will presumably just crack on with what they've been doing so far since it seems to have been working ok, no incidents such as have been regularly popping up with men in women's spaces.
Women being challenged? Well yes, that's more of the shit men handed us when they started invading women's spaces and women started to get suspicious and anxious. It's not exactly the end of the world to have to reassure another woman, and I've tended to find as soon as a woman with a trans identity smiles or speaks it becomes clear they're not male.
The whole men being terribly unsafe in male toilets and changing rooms - well I'm not cruel enough to say to anyone the things that the lobby and such men said to women when they were the ones trying to explain being afraid. NAMALT/ fetishing victim status/ if they're going to hurt you they'll do it anyway etc.... it's vile. I am however quite happy for men to have to do what they have made women do for years when using spaces they feel anxious about, which is to make risk assessments on the spot about whether they want to chance it, or go somewhere else, or manage without. That's been what women have done and been expected to get on with, and it's mens' turn to suck it up and get on with it now until third spaces are in place.