A lot of it is people typing furiously and hitting post before they engage their gray matter and a lot of those never do engage it, or it is sorely lacking. Then you have the emos downvoting anything that bruises their hopium, no matter how obvious or well sauced. Take this post 7-5 and it's completely true and obvious to any objective reader. ~60% isn't very good for the awakening. That's about the ratio of critical thinking.
A lot of it is people typing furiously and hitting post before they engage their gray matter and a lot of those never do engage it, or it is sorely lacking. Then you have the emos downvoting anything that bruises their hopium, no matter how obvious or well sauced.