I definitely means something for the US govt. The reason they can keep issuing debt is because America always pays its bill - it always pays it interest on the debt. So no, "they won't mind not paying for it", they absolutely can't not pay for it. As soon as America stops "paying for it" people will lose all faith in the government's ability to honor debt, and people will stop buying the debt. At that point the only thing the US could do is print money to cover debt. Which would quickly debase the USD. Like how inflation got up to 10% a year or so ago, that might become the norm.
One reason the Fed needs to drop interest rates is because higher interest rates means the US govt has to pay higher rates on its debt. So part of the reason deficits are sky high lately is because interest payments on the massive US govt debt is high right now.
Anyway this is not a game the US can win. They will never pay down their debt, and with the interest they have to pay on their debt growing every year, they will never even be able to balance the budget again. Because of the amount of power and influence the US has over money, they can continue keeping this game going for a good while longer probably, but eventually the dam is going to break and the debt and the payments on it are going to get so high that the US is going to be forced to print more money each year and debase the currency and the economy is going to go into a tailspin as things get more and more expensive against the dollar at an every expanding rate.
Bitcoiners will be fine, but people purely in the USD system are going to be screwed, as will the US. There is definitely a financial reckoning coming for the US. May take decades longer to hit, but it is coming. The financial path of the govt is simply not sustainable and eventually its going to break.