Well, there's been a lot of entries there that are just writing for writing's sake. There are even those who post riddles, ramblings, and overtly imitative works. I don't have anything against the platform, and I've found a lot of real gems there, but as Wattpad grew there seemed to be a serious lack of quality control over what gets posted.
I can't speak for everyone, though. This is just based on my own experience, considering the content I have been exposed to. XD