... Do the objectors want guards at the door of every restroom to check the papers of each person who enters in case they are particularly good at impersonating the opposite sex?
Not the objectors in this thread, is the impression I've got.
The biggest objection Rolfe seems to have raised is that there is a prevailing attitude that no line can be drawn between people who are particularly good at impersonating the opposite sex, people who try to do so and people who pointedly make no attempt at all to try and simply declare they
are the opposite sex.
Rolfe's particular objection is to the idea of a law which sanctions someone simply declaring themselves to be trans, along with the fear that this will be abused by male sexual perverts who only want access to women's spaces.
It should be recalled that the model she subscribes to, formulated by Ray Blanchard, does not allow for the idea that there is even such a thing as MtoF transgenderism, that
all men who feel such dysphoria fall into one of only two groups, homosexual males, or this invented paraphilia, "autogynephilia", which means a male who derives sexual arousal from imagining themselves to be female (AKA, perverts).
This boils down to, essentially, 'There
are no transwomen, and thus no line to be drawn.'
She seems to give some grudging concession to the idea that full bottom surgery is enough to sufficiently disarm a male who is
that intent on invading women's spaces to satisfy their paraphilia.
The number of men may well be tiny who fantasize about having a female body and who also get a thrill from women's intimidation by their appearing in women-only spaces, yet if there cannot be any line drawn, then any objection to their behaviour is taken as an attack on all trans people.
This has nothing to do with being trans, and may even be a contraindication. And as you point out, it is a problem which is miniscule (to the degree that it exists at all).
We already have laws in place which would address such inappropriate behavior.
The actual problem is some natal women
feeling intimidated. I'm not sure if there is is good short-term solution to this, but I suspect that advocating a viewpoint which basically demonizes transwomen as perverts isn't the best way to begin the search for one.