The US govt is not like a household. You can print your own money, all your debt is deniminated in USD. Inflation is not an issue in reality. Google 'modern monetary theory'.
Joking aside, what MMT says is pretty easy to understand from reading ~100 pages and watching some YT lectures/debates, where mainstream economists also voice their opinion. A reasonably intelligent person can make up their own mind, irrespective of what others think.
Finally, if you watch debates on YT, it's not true that mainstream economists say it's garbage. They usually say "MMT is essentially accounting truisms".
Here's Paul Ryan asking Alan Greenspan about this:
Printing money does not food create. Look at Zimbabwe for what happens when MMT is put into practice.