Ah, I didn't realise you were talking about prospective miners rather than the retailers selling the rigs. Anyhow, again I don't think we necessarily need them to know much about Bitcoin. It's just like how investors aren't always clued up, they just see the opportunity to make some money. That isn't a problem really, not every adopter is going to be a believer in Bitcoin in the long term. Doesn't really effect us much in the long term, and probably does improve the amount of money short term investors make.

I don't see a problem with it personally. There's plenty of people getting into other markets that don't understand it, without actually being detrimental to it, and in similar vein I don't think the retail investors as you put it, will be detrimental to Bitcoin.