>>26826019It is likely because of a few reasons
Not what people expected, a lot of fan art depicted Fennekin evolving into something that looks more like Ninetales, a quadrupedal psychic fox that was related to all of those myths about magical foxes or some shit
The in game model is terrible, a lot of people's first impression of it was bad, not to mention its glaring ear hair and odd triangular shape.
The non stop shitposting from its fanbase
It's by far the weakest of the Kalos starters. Greninja gets a broken as fuck ability, Chesnaught gets a decent ability that can shut down a few mons and Delphox gets a horrendous ability that does jackshit and since gamefreak are the geniuses that they are they decided to give a fucking frog a better movepool than a magician, Delphox can't even learn thunderbolt, it's pathetic.
Hopefully they will fix it by giving it a better ability and movepool in gen 7, but considering they didn't fix Meganium after 4 generations I highly doubt it.