I dismiss bitcoin not because I think it doesn't work, but because the world in which it exists will not allow it to work. If it does not fail, it will be assimilated; if it cannot be assimilated, it will be crushed. (Can't be crushed, you say? Maybe not, but the people who use it certainly can, and then what's the difference?)
Maybe us yuppie elites dismiss Bitcoin because the ecosystem is rife with hucksters and fraud and crime. Or maybe we still remember the Beanie Baby maximalists and how that turned out.