Childish retort. Not worth responding to.
A space that is reserved exclusively for females may only be used by females.
To access a female toilet or changing room or safe space for females, you must have a birth cert' stating that you were assigned the sex of female, i.e. like transmen.
A space that is reserved exclusively for males may only be used by males.
Vice versa. To access a space reserved for males you must have a birth cert' stating you were assigned the sex of male at birth, i.e. like transwomen.
Spaces that are not reserved exclusively can be used by anyone.
'Twas ever thus. The Supreme Court judgement didn't change that.
Nobody drags men pretending to be women into men's toilets against their will.
Strawman
You are pretending not to know the difference between "permitted" and "forced."
If a transman wants to use the toilet, he/she has no choice but to use the Female toilet. He/she may be committing an offence if he/she uses the male toilet, and vice versa. Or they can't use the toilet at all, which is not a choice.
They are not permitted to do one thing = they must do the other.

if you are not permitted to drive on the right, you must drive on the left. Or not drive at all.
Because you hate the idea that men pretending to be women are not permitted into spaces that are reserved exclusively for women.
Another strawman because you refuse to accept that the Supreme Court judgement was as erroneous as the situation prior, and gives rise to even further problems.
A transman, to all intents and purposes male, wishing to use a space reserved for single sexes, where no alternative option exists
must use the female only spaces, in order to comply with the Supreme Court judgement. They are not
permitted to use the male only spaces.
Moreover, if they wish, they are perfectly at liberty, and within the legal framework,to use the single sex space that conforms with their birth cert'.