tl;dr
video 1
- 0.08-0.22: Net debt to revenue is a dumb measure as it captures a government's willingness to pay now; most economists prefer net debt to GDP because it shows a government's capacity to pay. This means that if a government can pay its debts out of current revenue, it can simply increase taxes to cover the gap.
- 0.25-0.51: Claims that the US government has unsustainable debts are true if we assume that it can't change its revenue levels or adjust the rate/quantum its pay. Both assumptions are false: the US government can adjust its revenue by increasing taxes and can also adjust the rate/quantum it pays on its bonds.
- 0.56-1.15: $14 trillion? Well gosh, that sounds like a lot! It isn't. The US economy is worth $15 trillion, giving us a net debt to revenue ratio of <1. To put this into perspective the average homeowner on the street has a net debt to revenue ratio of about 7. (The global average house price is about 7 times average income). Another point: government's are not at all like people and run under totally different rules (see: counter-cyclical spending).
- 1.23-1.56: I think the "taxes vs. spending: 1940 - 2011" chart is using nominal figures. I can't check because there isn't a source.
Also, what idiot uses dollar figures in this context? Here's the reason: The budget deficit in the 1940s on a percentage basis would be comparable to the budget deficit now. As it is, you literally cannot see the massive deficit spending of the Second World War. And that children is the danger of nominal, non-sourced data used inappropriately! 
- 2.00-2.40: "I don't understand monetary policy/inflation therefore it must be evil." Also, what the hell does inflation have to do with commodity prices? The price of commodities over time is a function of demand and supply issues and not moderate (<3%) inflation. You can prove this by looking at the nominal price of gold over time. The nominal price of gold in the early 80s was higher than the nominal price of gold until 2007. Furthermore, if we adjust gold prices for inflation, the value of gold is still below what it was in the 80s.
- 2.40-2.45: "Nefarious foreign governments own America's debts!" Actually, no. Foreign governments (and foreigners in general) only own about half publicly owned US debt. If I use the $14 trillion cited in the video (which includes all holdings of US debt) foreign ownership of US debt decreases to about 30% of the total.
- 2.45-3.10: ... printing money causes appreciation ceteris parabis.
Also what do wages have to do with America borrowing money? I'm having trouble following the logic and I know it doesn't follow empirically. Sufficed to say that wage differentials between countries have far more factors acting on them than US borrowings.
- 3:10-3.20: Apparently outsourcing, which peaked before the Global Financial Crisis, caused the Global Financial Crisis.

- 3.20-3.40: Automatic stabilizers? Counter-cyclical spending? What is this I don't even.
- 3.40-3.50: Stagflation with 3% inflation? Seriously? That's not even above the target band for christsakes.
- 3.50-4.00 : "He can't make the Federal Reserve create more money without making inflation worse"? Hahahahahahahahahahahahahahahaha. Where's the inflation mang?
- 4.00-4.20: "Inevitable bankruptcy"? Evidence for assertion please.
- 4:20-5.15 : So America defaults... the world collapses because reasons.

In short, utter nonsense which doesn't even hold up to the most basic (eco101) level of scrutiny. Point in case, the author cannot seem to decide what inflation is and changes his angle on it at least three times that I counted. All in the same 5 minute video!