AFAIK Mozilla is based in Mountain View, California, where (according to your infographic) it is indeed illegal to fire someone for their sexual orientation or gender identity.
Not sure if that also applies to remote workers who live in other states, though.
However, I live in the midwest (Indiana) where we do not have similar protections over things as basic as sexual identity. It really is that backwards here.
Not sure if that also applies to remote workers who live in other states, though.