Maybe the karma points subconsciously incentives people to write profusely detailed situations before hit Send. Almost impossible to believe.
And while the posts might be fake, the disturbing thing is that the comments/advices usually are not.
I don't have any estimates on the rates of change, but consider how huge Reddit and some of the default subs are, and how half of those people are below-average intelligence(Carlin quote?).
I'm not at all surprised to see dumb shit on big subs, or to see people lying on the internet for imaginary points. I just moderate my expectations based on where I happen to be at a given time.
Part of being well-adjusted means knowing damn well better than to post anything approaching honesty online.
You can find a fun sampling of those insane posts here: https://nitter.net/redditships
I'm not saying this is fake, especially since it wouldn't really matter either way, but it's interesting to think about. I remember reading something about people who fake advice column letters. There's a real art to the best ones.