tl;dr: Because you rained on their harassment parade in Everyone's_A_Mod, which made you a target and now colors their entire perception of you.
But again, you've established yourself as one of ImgFlip's top users in a very short period of time. Deleting you would be total self-inflicted wound.
So I feel it ain't gonna happen, and if it does, there will be hell to pay from all the ImgFlippers who support you.