It was created because transpeople were accusing straight people of transphobia just because they wanted to date non-trans people.
Super-Gay, Super-Lesbian, and Super-Bi came first, but when we Super-Straights decided to properly define our sexuality, the transsexual community lost it’s collective mind and actually started sending deaths threats to us. Twitter has suspended hundreds of trans for their violent tweets.
I guess the community of inclusion only wants to include those they agree with.