An issue here is, what is hostile? The heterosexual coworkers will tend to socialize with people they identify with. So, no one socializes with the odd entity out. This is one of the problems I had with Star Trek. Everyone socialized with the aliens as if they were just regular humans with weird face makeup. If the other characters were real aliens very little of social relationships would have worked. Same thing here. You have someone who is obviously not what they say they are. They might as well have green skin and multiple brow ridges and come from a culture that was only recently eating human babies.
If I sent something to gay coworkers asking them how to celebrate being straight, THEY would file something against ME.
Those poor children who are being influenced by this monster. And this is Thermopylae. NJ needs to throw everything at this to stop this sick nonsense and then sue THAT ILK for everything they can.