To a certain extent that is true and we can't prevent sexual assault in all sorts of circumstances, but I think that is irrelevant. What parent is arguing is that simply having a male incarcerated with females increases the chance of sexual assault so significantly that we need a different solution for transwomen. I am saying that I think it says a lot about how we conceptualize both prison and gender that we find the incidence of male-male and female-female sexual assault in prison acceptable by comparison, because that's what we're saying here: put transwomen in male prison and transmen in female prison.

Besides which, I reject the notion that we cannot do a better job prevent sexual assault in prison. In the US at least, prison conditions are horrifically bad because a significant portion of the population likes it that way. We're a cheap, vengeful, petty people on the whole.

Yes, we can't make it perfect. So what? Perfect is the enemy of good. I think we would be better served by dealing with the problem of prison's high incidence of sexual assault in general instead of just this one narrow case.