I bet they believe that gender orientation can change in a day, but only in one direction. That direction is not hetero-normal.
So, “gender identity” can change from day to day, on the whim of the person, even though that goes directly to who you ARE, but “sexual orientation” is fixed, unalterable, written in stone, “we were born this way,” even though that’s just about who or what you LIKE?
Sounds like the trannies are letting the cat out of the bag and raining on the homos parade.