the pony people dont actually think the show is that great to begin with. it was a joke fad from within themselves. its cool to be accepted into groups. derp.
but now that these tools had themselves shunned so horribly in the community, they cant just turn around and be like "yeah ponies are lame". they dug themselves in to deep defending the stupid things. and forgeted themselves lol. the only option is to keep on with the pony thing, as it degrades them less then admitting they played a fad to long.