I don't agree that upvoting someone is a "gift". Upvoting someone is stating that the content, in your opinion, is good. Just as you have the right to state this, the others have the right to state the opposite. Ideally if the content really is good, the creator will be rewarded, not gifted, for contributing.

If you try to misuse the system for something else than it was meant to be used, you have no one but yourself to blame if the plan backfires.