I'm afraid I am not really into animated gifs.... What I do know is that gif is a terrible format in general, illogical in setup and also bound to a 256 color limit (as the format was invented in the VGA time, although other formats from that time do support infinite colors)... I do appreciate the work put in this, and I did recognize Jesus, but I could only watch it for a short time as I really felt my brain acting a bit up on me...
If it really functions well as a gif though, but not after upload on imgflip, I think you'll have to ask a site administrator why that happens...