Liberals are trying to use 'public accomodation' much like they do the commerce clause, as basically a catch-all that justifies their regulatory schemes. Disregard the fact that most facilities are required to have bathrooms by law, you are taking the regulatory stance of businesses and trying to apply it to a house of worship which sells nothing and takes money only as a nonprofit. It is a big expansion of the penumbra of 'public accomodation'.
Then there's the simple fact that 'transgenderism' is completely unscientific and based on nothing but delusional psychology, and then allows only one special group to enforce their 'identity' upon the rest of the world, while claiming 'equality'. Equality for only a few imposing their morality on everyone. Separation of church and state anyone?
I said said far back while it gay marriage was being run thru the court system that where we need to draw the line is transgenderism. This is the battle of the social war we need to fight, as the liberals have nothing but brute force to make the public obey it. If we do that it will set them back years on their agenda.