Disagree on some of the points but I’ll only address the need for money printing and forced austerity since those are the only ones I can relatively concisely. I agree on the assessment on who gets hurt by inflation and default.

I’m not sure if you’re saying that governments only need to print more money if they’re bad with it but I’ll address some needs for money printing just in case.

There are plenty of reasons for governments to print money. For example, population growth. Having growing population and the economic expansion that comes with it, without monetary expansion leads to price instability where prices have to fall in order for the same amount of money to be able to buy more clothes and bread made and consumed by the new people. Price instability is a problem (e.g. deflationary spiral) which is why the government prints money and releases it into the economy to compensate for the increased number of people and goods to keep the prices stable. Critically, the government cannot borrow or tax this money from its citizens because that will remove it from the very economy the government is trying to add money in. End herein lies the clue the government cannot borrow or tax money it hasn’t printed and spent first. Printing and spending has to appear first or a government has nothing to tax or borrow. This is why a government does not need to borrow or tax in order to spend. A government might choose to borrow or tax for different reasons after printing and spending. E.g. it could tax in order to keep inflation in check. I’m not saying all governments understand that and I’m definitely implying that the ones that use the family budget analogy don’t understand how the system works.

One really important other part of that is that private capital is not able to force austerity. If they have it in your country, the government can just tax them.

This is only true under the additional assumption that the government in question is not ideologically or financially subservient to private capital. If it is, as many are, it will choose not to tax, in which case it would be forced to cut spending and/or sell off assets, which is austerity. This process has driven austerity and privatization in many places around the world. It’s driven it where I live as well. In Canada, we’ve sold railways, utilities and highways, among others.