Sorry, I have just thought of another point for this.
There are other groups of male people who don't feel safe in male spaces. What do those groups of male people do? Why should this group of male people receive special consideration (by way of special spaces) if other vulnerable and marginalised male people don't get those considerations?
If there is a generalised lack of safety for male people with transgender identities in male single sex spaces, can the same be said for other vulnerable male people? Are there reports in the safety of these groups so that governments and organisations can address these safety issues?
I have asked numerous male people who have transgender identities on threads why they and the groups that support them have not started these campaigns and the answer has generally been, because we are women and female single sex spaces should be available to us.
Or... even more interesting, those male people agree that some other male transgender people need to be excluded from female single sex spaces. But that they, personally, should be using female single sex spaces because they are genuinely women.
Another variation has been that they express empathy and say they completely understand that it may be distressing for female people for them to be in the female single sex space. But, if they need to use the toilet and there is not third space available, then they will most definitely use the female single sex space. Because they can.
And it is not just me who have been on those threads asking this of those male people, it is some of the others who are also posting here on this thread. We have had these discussions. The answers from these male people generally go either of these ways.
It is very rare that a male poster with a transgender identity will answer that they will always respect female people's needs and stay out of female single sex spaces.
On the flip side to this is the answers from female people who have taken testosterone. They know and understand that the testosterone has added some male body cues to their appearance (it is what they hoped for, after all). They don't wish to use male toilets. However, they also understand those male body cues may distress some female people in the female provisions, so they go a very long way to find alternative solutions for themselves.