Those wars were largely there for the mil-ind establishment to make money from government hand-outs, not as genuine military or geopolitical operations.

The US is actually a fake military state - like North Korea, with better PR and advertising. It doesn't matter that it's not good at winning wars. What matters is the fake patriotism (for the proles) and the state spending (for the CEOs) that keep the pantomime running.

Practically, a lot of super-expensive hardware simply doesn't work. E.g. the F35 program is a disaster. So there's a good chance the US would quickly get its arse kicked in a real non-nuclear superpower war.

I think the US political classes know this. Hence the huffing and puffing over the Ukraine, and the complete absence of concrete action.

In fact when the US wants to do geopolitics, it sends in the spooks and creates a coup, or sends in the bankers. (See also Gene Sharp, Venezuela, Greece and Spain, etc.) Actually blowing shit up is largely for PR purposes these days.