The ultimate goal of people who always call themselves Satoshi is that they want to become famous, and when famous, there will be many ways to make money. I think money is still what those fakers are after. Although there are many opinions that if Satoshi appears, he will be investigated and imprisoned... but up to now it is all just speculation, there is no guarantee that will happen. So the fake Satoshis out there won't be afraid of that.

It's tiring just because a fake Satoshi twitter account has made the whole bitcoin community stir.