Well the cost of energy is going up. (Period) Declining production in tandem with increased demand (mostly China and India) pretty much assure cost increases so long as other market forces remain unchanged.
And I never said anything about 'all our debt' or whatever. I said that if the dollar falls in comparison to the Yuan it makes it cheaper to pay off the money we borrowed from them. It's a specific case example. But in any currency situation inflation/devaluation always favor the borrower and work against the creditor.
It also works out extremely well for US manufacturing, lowing the cost of US goods in China, while raising the cost of goods produced in China and sold in American markets. It would suck to be WallMart, but I'm OK with that.
Overall, for average people (the non-Mitts among us) a relativity weak dollar is better than a strong one because it lowers the cost of US goods in the global market.
But all of that is just a sidebar bit of blowback, what this really is all about it Iran.
This entire deal has a huge backstory going back to to the Islamic Revolution in Iran who were behind a move to change the pricing of oil in dollars. (Note: Pricing oil in dollars keeps US currency strong, as, in effect, US Dollars are not back by gold, but rather by oil - you can always use them anywhere on the globe to change to oil. Traditionally the reason oil was priced in dollars was because only the US Dollar had enough money circulation to cover the mind-blowing amounts of oil traded everyday.) At the time they wanted to shift to the Euro, but the other OPEC nations didn't (correctly it now seems) think the Euro was stable enough. That and the US basically threatened Iran, and they backed down. Now China is an importer of oil, (second only to the US) they export very little as what oil fields they have are old and in decline, and mostly what they buy is Iranian oil as they don't care about international sanctions, so they are about the only people who will buy it. Iran is taking this opportunity to try again to - in effect declare war on the dollar because basically they hate the US Government, for a couple of pretty legitimate reasons by the way - move away from American money. If it's only the Iranian Oil Bourse that does it, it's not a big deal, if other follow like Saudi Arabia then it could be problematic, but since the Saudi's are a) heavily invested in US Dollars they are not likely to want it to decline, and B) the only place that worries more about Iran getting nukes than Israel does is Saudi Arabia, it lacks plausibility.
What's most disturbing about it is that it looks like Iran is getting ready for war, and that's bad for everyone.