"Fedi is bullying the straights" is an interesting take considering the only bullying I've seen was more innocent jokes than some brigade against the straight people

Sure, I get it just might feel a bit awkward in a group where many people have been coerced into being straight earlier in their lives, and feel a bit defensive towards the concept now due to trauma

But I haven't seen a case where someone would genuinely think straight people are "mentally ill" or a different way of degrading 

 Straight people are mentally ill. They're your garden variety autist like me.