Labour are tying themselves tighter and tighter in knots with this identity policy crap. I have been a labour supporter for a long time and have no good reason to vote for them now. It's really disappointing.
So, inclusion is important, but so is specificity so as not to reduce people (women mainly) to their constituent parts.
For purposes where distinction has to be made based on sex, how about acknowledging sex exists, it isn't a dirty or insulting concept then saying whom exactly is being referred to. So, for smear testing, 'women and trans men' and for prostate testing, 'men and trans women' or maybe 'pre op transwomen/ men'.
I feel as though the problem is desperately scrabbling for homogeneity whereas actually as long as trans men and trans women are treated with respect and inclusion, protected by law, where is the harm in accepting they didn't start life in their chosen gender and that will cause differences in limited circumstances (medical, prisons, sports etc). Leaps and bounds have been made in acceptance over the past few years, so why not head for true acceptance rather than erasure of the facts which is the way things are going.