We can't just keep saying "Don't be the dropbox guy" as a comeback to criticism of new technology. Anyone who uses that phrase should have to place a bet in a prediction market that only pays out if the product they're talking about succeeds. Blindly supporting stuff out of a sort of "Pascal's Wager against looking foolish later" should have some cost if you're wrong.
I completely agree with you. This is just a web front-end, and there's nothing new about it. However, it's very easy. It's not easy to create something like this.