Some of them are drug dealers, English school recruiters, and other necessary evils. Some of them are just people with an axe to grind but without the courage to put their own reputations on the line. Some of them just prefer the oldschool Internet tradition of anonymity, wherein people are judged by the content of their words rather than the shallow prejudices of identity politics.
And then there are some who are just too freakishly weird to even be believed at all.
I miss 阿姨恶拉.
How do you even define something as being a "fake" profile. This is not facebook nor google+ and as far as I know there is no real identity / real name requirement when you sign up for this website.
Your decision to put real pictures of you here is yours and your own. There is no rule forcing you to do so. It doesn't make sense to try and force people to play by rules that you've set upon yourself.