It’s a weird precedent to “let the miners decide” as they are saying. Miners decide on the longest chain using an algorithm. They’ve never decided which transaction outcome they prefer and communicate out-of-band (i.e. via chat) to elect it. It’s also not good that the ETH developers themselves reportedly have stakes in the DAO they propose to bail out.
Who was hurt? Although when reported in exchange dollars the DAO losses look huge, I expect most of the ether was presale or mined and that very little “fiat money” is lost. That is, I expect few, or none, wil lose their house or car over this. You might even say the “intellectually pure argument” is to assume that these actually have lots of real world value, today, and that the losses are catastrophic and deserving a a bailout.