Can I go back to basics? Gender is a social construct. Sex is biology.
We should by now accept that people can wear and do whatever they wish, even though what they choose was previously consider to effectively be exclusive to a different sex. Would Tom Daley, or any other male athlete have brought out their knitting so openly at an Olympic Games 12 years ago?
This means a man can dress as a woman, or anyone else he wishes to be, he can dress in a toga or in fancy dress, he doesn't need a special name or category, but if he is still fully male, he will be expected to use the mens toilets and not the womens, be sent to a male prison if he offends, and expected to use male facilities in situations where biology is pre-eminent.
Similarly, only biological women have babies and menstruate and therefore should be described as women not 'persons'. If they want to dress as men, or anything else, if their body functions as a women, they use facilities labelled for women.
With men and women who are moving from one gender to another, and having surgery and taking hormones the situation is more complex. If they have had the full surgery and men no longer have a penis and testicles and women have also been provided with that apparatus, then they should be able to use the facilities associated with the sex they identify with.
The problem is those in transition, and here a separate category may need to be recognised, but again it should be governed by whether the person concerned still has the external appendages of the sex they were born into.
At the end of the day, there are 65 million people in this country and, perhaps, 1% wish to change their sex and be identified as being of the opposite sex, I mean people choosing surgery, rather than simply wearing clothing associated with the opposite sex. Most of what they want: recognition and acceptance, freedom and a lack of prejudice against them in any sphere, is entirely possible within the current loaws and regulation.
However when that small minority demand special rights, wants to change our language when it is biologically correct at the moment, demand special rights and recognition and expect most of the 65 million to change their lives to meet their demands, then a line must be struck.
None of us is entirely free to do everything we want all the time. We learn how to trim and adapt to fit in with other people. You may love playing the trumpet, you may be a night time person, but you do not start practicing your trumpet at 3.00am, if you live in a block of flats and if you do, you can expect to be told to stop and not repeat the offence. There has to be give and take.