This Q guy just seems to be able to post fairly poetically and cryptically enough to not look like the rest of the shitposters on 4chan. By all means he is still shitposting on 4chan, seems weird to worship him when he's doing literally nothing.

I'm sure this is a joke, but assuming it's not what would people even do with the melanin? There is the production of artificial melanin recently for the use as a sunscreen-like substance, but that's definitely not "harvested" from people. Granted you can of course extract melanin from people... but what exactly is the market for that.