The inflation is coming from the sanctions and dedollatization. That's the biggest material reason I could see the internal contradictions boiling over as paychecks and savings don't go far enough to keep people housed.
Then there's the Supreme Court's war on the administrative state, looking to gut everything from the NLRB to the DoE to the EPA. Those institutions are one of the ways superprofits are redistributed to the labor aristocracy; my pet theory is they're going to be debourgeoisified by the one-two punch of declining superprofit and declining distribution of superprofit.
And then, of course, there's climate change and ageing infrastructure. The way those will interact in the US, combined with a weaker dollar and no administrative state, could lead to cities becoming nearly ungovernable.
Things are going to get rough.