Newsflash: I'm originally from North Carolina and H2B—also known as the "Bathroom Bill"—wasn't even about public restrooms in the first place. In a cunning, underhand move, lawmakers slipped that part in to discourage voters from favoring the bill, which was really against raising minimum wage.
Trans and gender non-conforming patrons have been using the bathrooms of their choice since the beginning of time, and nobody noticed until this bill became a hot topic. Not only did H2B harm North Carolina's economy by preventing cities and counties from raising minimum wage (which, in case you're curious, remains at a disturbingly meek $7.25 per hour), the law also hurt the tourism industry with many famous artists canceling performances statewide.
In response, a lot of small businesses took a stand in a simple way: by replacing their boring bathroom signs with funnier ones that told customers they could use whichever bathroom they wanted ... as long as they washed their hands.