The helicopter tweet was not aimed at transgender persons, you know that, it was a meme aimed at otherkins. Based on Rubyeclipse past tweets he has never once came across with narrow-minded views, so to say he intended to mock transgender people is illogical. Where is your proof? The first tweet you quoted implies that the account meant to offend transgender people, it doesn't not. Changing the context to suit your own agenda is dangerous and it belittles times where people are actually prejudiced by comparing the two. However, don't let the truth get in the way of a good story.
Where is your outrage at how otherkins are treated or do you think it's okay to send tweets mocking them? If it's not okay, where was your condemnation? Are they not people too?