Look at how stupid you are.
This is a free market. Nobody has a gun to miner's heads coercing them to mine in any pool susceptible to hopping. They have plenty of alternatives and yet they still choose to mine there for whatever reason.
This is precisely what happens with NMC to BTC. Every other 2016 blocks many NMC miners *choose* to mine at a 25-40% disadvantage to the exchange rate for a month to subsidize a 2-3 day profit bonanza for BTC miners. Nobody forces them, yet they're glad to do it for whatever reason. Am I stealing when I only mine NMC when that has a 50% advantage relative to exhange rate subsidized by their month long loss?
Also, I probably have t-shirts older than you.