Subject: Re: Can't They Just Leave Women Alone?
You need a trans woman to be present for there to be an issue for cis women. The scarcity of trans women just means a scarcity of circumstances where this is an issue for cis women. Since fewer than 1% of the population is a trans woman, statistically speaking fewer than 1% of locker rooms will have a trans woman in them (though obviously that will not be evenly distributed geographically).

That you simply invert my number argument sounds correct at first glance, but is a misuse of statistics, as it completely leaves out the fact that 1 trans in a female facility does not make 1 woman feel uncomfortable, but eventually a large number in there, depending on the type of facility. Just think about a sex segregated sauna with a dozen women in there, and a trans entering (This is an example, for illustration purposes. Because of lack of knowledge of those things I have no idea whether in the US or elsewhere that's possible now or in the future).