So, no big surprise here. If there’s any advantage to be gained from marshaling an army of fake Twitter accounts, well then that’s what people will do.
One quibble I have is that the definition of “fake” seems only to included automated bot accounts. I say it should be expanded. For example, I actually have a Twitter account myself, the sole purpose of which is for entering contests that require you to follow some name brand or other. I’m not there to engage or discuss anything, to create content or to really consume it. Doesn’t that count as fake?