You're dizzy - I've had bed spins that left me better off than this.
Maybe this is where the confusion lies:
In the past, transgender individuals would at some point start using the facilities they were transitioning to. It's part of the psychological transition, since we are conditioned from early childhood to use our biological-matching facilities. In fact I understand that it is often one of the difficult switch-overs because the conditioning can be so deep. It is important, however, if they are actually going to LIVE in society as a gender that they were not born with.
No one really got up in arms about this, most people were probably unaware it was even happening, as these individuals are a small segment of society. Then we started being made aware in places like our cultural entertainment. People like RuPaul and Laverne Cox challenge our ideas about gender and inclusivity.
When people DID start to get up in arms seems to be when children in high school and middle schools started coming out as transgender and wanting to use the opposite sex facilities. We are, of course, uber-protective about our children in at least some regards (not others, obviously). So people got upset and started demanding that the affected children use their biological facilities or have totally separate accommodations.
Evangelicals and various other mostly conservatives picked this up as the new boogeyman and have expanded their efforts to include preventing adults from using facilities they had already been using for years. Since they are unable to show that the transgender individuals themselves pose some threat to others in these facilities (not born out by statistics), the threat is couched as: Bad Men will pretend to be women and assault women and girls!
The Texas bathroom bill (possibly near dead for now) pro-arguments centered almost entirely on this premise, despite the fact that this is not something that HAS BEEN HAPPENING ALREADY (maybe Bad Men were not aware of this potential avenue of access?). Meanwhile the arguments totally ignore the fact that restricting people to bathrooms based on their birth certificates would result in people who totally look like men using women's facilities, thus removing the need for Bad Men to bother even TRYING to look like women.