the physical danger of forcing a medically transitioned, testosterone-suppressed individual into a men's facility
Obviously no adult male, however he identifies, has any business being in female spaces.
However, the blog very much wants us to consider the quote above - ie just how dangerous is it to expect a trans identifying man to use the men's facilities.
For whom? For other men, not dangerous. For the trans identifying man? Not dangerous either, according to the transwomen who already use the men's facilities (see Miranda Yardley and others.)
Even if there were a very unlikely risk, (which I don't accept) - all the many physical advantages of male puberty are still present in a transwoman (see Emma Hilton's work). Therefore a transwoman can defend himself against another man - unlike an actual woman against a transwoman.
And again, even if a transwoman was at risk, that has nothing to do with women.
Men, including transwomen, can sort their issues out themselves. Build separate spaces, or just be more accommodating and compassionate towards your fellow males. You are not our problem to solve.