I assume her point here is to stoke transphobia for clout. There are lots of phobic/ignorant parents who think queer is contagious or a conscious decision people make. They fear that exposure to queerness will make their kids queer. She’s further farming for outrage by making the restroom the boys’ room and the age (4th grade) one that is typically pre-pubescent.
The takeaway here is this is cynical propaganda that plays on the fears of the ignorant, for no purpose other than grabbing eyeballs.