It seems like it's so easy to manufacture majority opinions that don't actually exist. And people tend to vote based on how they think their group will vote. Take somewhere like reddit or even here, and look at the disparity between political opinions on ordinary threads in random places, and the top comments/voting patterns on explicitly political ones.

So yeah, I'll sign on to "gaming social media kills the democracy." The question is, what are we going to do about it? As an individual you don't have to participate in social media, sure, but that counts about as much as your vote does.