We are all able to use our stake in whatever way we determine best. So yes, there is nothing to stop someone from loading up with Steem Power, if they have the cash to do so, and voting "not in the spirit of things". Ultimately, there are people who are constantly voting and flagging each other because they disagree about what is "useful content". Fortunately, there are not a ton of people who are going to put the cash in required to become a full fledged troll.

That's the beauty, and the ugly underbelly, of a self policed, decentralized, platform. Those of us with smaller stakes just have to try to stay out of the cross fire most of the time. haha