What is a tiny voting percentage is not clear cut but something like 0.1% definitely is. We get ten 100% votes per day. If you only vote at 0.1%, then you need 10,000 votes to to use up your daily voting power. You can't judge the quality of that much content per day. And because you can't, you shouldn't earn anything by autovoting 10,000 times a day. Even 2% votes can be called tiny because you need 500 of such votes to use up all your daily voting power.