Maybe they should arrange for a shower/bathroom facilities designated for deranged perverts that all of the LGBTQXYZ can use regardless of the phase of the moon.
Maybe they should tell the lunatic it is not welcome at all.
Most of the comments suggested they install a third set of facilities (bathrooms, changing rooms, and such) to accommodate the non-binary individual.
How much do they think that would cost? A five, maybe six figure expense to make one customer happy isn’t exactly what any business wants to spend their money on.