A pejorative term used by queer people for a queer person who is actively fighting against their own community, or is acting in a way that encourages or allows discrimination towards their community. Originates with Caitlyn Jenner, an infamous conservative activist who, despite being trans, loves to hate on trans people in particular.
Lesbian Influencer: I am gay, and I have a serious problem with trans people nowadays. What ever happened to being quiet and modest about your sexual impulses? Where did this pride of being queer come from? Why can't you just be like cisgenders?
Regular queer: Handing out free dislikes for your dumbass, you fucking jenner.