I find myself constantly flabbergasted at the willingness of males to discount and ignore threats to the safety, dignity, and privacy of females. Seriously. Merager has a lengthy criminal history going back a decade, including several prosecutions for indecent exposure. So far as I can tell, Merager hasn't been engaged in any kind of transition whatsoever.
So I'll toss out the obvious question:
If a cisgender male goes into the female-only section of a nude spa and exposes his genitals, is it indecent exposure?
If a cisgender male goes into a female-only section and ostentatiously, intentionally, exposes their genitals to others beyond what is necessary to use the facility, he would be subject to a potential charge of indecent exposure. But so too would be a cisgender female who did the same thing. Your personal opinion about what you think might be someone's birth assignation of gender
might be cannot be the criterion that defines indecent exposure, and indeed it is not. It is not indecent to simply exist, or to use public facilities for their intended purpose.
I note that transgender laws of the kind you usually support would actually
require a person with a penis to use the female locker room if they were assigned male at birth but are now post-transition, since trans people who use a room
not matching their birth certificate are subject to formal legal persecution in states that have such laws (in which category, thankfully, California does not yet belong). So, what's the deal here anyway? Aren't penises in female locker rooms a natural outcome of strictly legislating who can use which bathroom on the basis of birth assignment, in a world where post-natal physical transformation of apparent sex is common?