Given that the probabilities don't change, it wouldn't make sense to invest/divest on winning/losing streaks. That's investors fallacy.
Unless for example the hash distribution is not random, or the server seed is not safe.
I agree on that, but now many people are getting pissed off because sometimes in these days that strategy worked. It would be the same if an investor divested, bet 30BTC on head or tail, wins and then invest again.