As I pointed out in another comment: maybe this could also be a lesson in how little you actually know -- if you're using involvement in Magic as grounds for criticism (when the various marketplaces for Magic are many times more reliable than for Bitcoin, and when hedge funds are a common career destination for pro-level players), you may be far more ignorant than you realize.
I'd agree for people who are seriously saying that its origins as a Magic exchange implies that it must be bad now, but most of what I've seen (including my own) has been doing it jokingly.