You can say you think trans women in single sex spaces puts muslim women at risk, which I disagree with, but equally forcing trans women to use male spaces puts them at risk.
You don't seem to understand where allowing 'transwomen' to use women-only spaces leads @Oystercakemix.
My understanding is that a 'transwoman' is anyone who says they are (as long as they are male).
You suggest that these 'transwomen' are at risk in male-only spaces (although I am not aware of any evidence of this).
Since a 'transwoman' is any male person who says they are, what is to stop any violent males from also entering female-only spaces, simply by declaring that they are 'transwomen' and thus endangering not only the women in there, but also the vulnerable males who you want to protect by allowing them into the female-only spaces?
Making female-only spaces open to males is not a solution to male-on-male violence.