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In my opinion, it isn't in the spirit of crypto to have closed-source things. That is the difference between Satoshi and this wolf idiot.
Just to be fair, he is responsible for the fastest open source cryptonight cpu miner, and I think the fastest open source neoscrypt kernel for sgminer, so it's not like he's contributed nothing. He's also pretty much just a kid, and I think a bit disappointed in how much users will donate to open source tech, so I don't begrudge him possibly keeping some code to himself/paying customers.