Twitter doing nothing about it and making it easy for people to sign up to be sockpuppets is part of what defines what it is to be Twitter. It's maximizing for a certain kind of thing.

Facebook has strongly different intentions: it is aggressive about wanting to tie single identifiable accounts to single identifiable real people, and wouldn't like the Twitter-nature one bit. Facebook's purpose is to do that, and then make it easier for people to pay money to propagandize exactly whatever people you can define as most vulnerable, for any reason you like, no questions asked. That's Facebook-nature. You can be pretty sure an individual person there is a single, real actual human, and also that you can sell preselected groups of them on anything you want them to believe.

I like that people are complaining about it, don't get me wrong. I think it's pretty clear at what point all this becomes a problem: if it isn't clear already, it will become clearer within ten years, guaranteed, and humanity may or may not survive the result. Complaining is GOOD.

I'm just saying, the reason these social media giants are as huge as they are IS because of their natures. Twitter will not go against Twitter-nature. Facebook will not go against Facebook-nature.