Good faith compliance is impossible.

Go to the restroom that is not compliant: violate the law.

Go to the restroom compliant with your assigned gender: police is called because you don’t look like your assigned gender.

The spirit of the law is to prevent trans people (and anyone else who is not strictly gender conforming) from existing in public spaces.

If I had to hazard a guess, a futuristic city based on cover art for '70s science fiction novels, several of which are on my shelf.

“protect”.

We know how these people think.