Philosophically I agree that whoever owns a token should be able to vote with it. (Nevermind the discussion of whether or not STINC was bound by their promise not to vote).
But any DPoS chain that wants me involved going forward need to have some sort of mechanism that still prevents this type of take-over from being possible.
Maybe a delay in time from when tokens are staked to when they can be used to vote for witnesses/BP combined with max votes being reduced to 5 would be sufficient.