I’m not saying Europe is automatically better on those axes, but even the least charitable assessments have it very competitive with the US on several.
All of which is to say: “well if our politics are so backwards how come we have so much economic/military power?” is a structurally useless question to ask, because those things are not correlates the way people think they are. It’s like asking “if your car is so much safer than mine, how come mine is so much faster?”
The current economy being Biden’s fault, and not tariffs, corrupt tax cuts for the rich, and oil blockades, is certainly a take.
Judging by the recent elections, I’d say most US voters don’t agree with that take.
It's a "shitty economy" today because
(1) Interest rates were generationally low for an extended period of time from 2009 - 2022. We will likely never see that kind of sugar rush again in our lifetimes.
(2) Trump made a deal with OPEC+ during the early days of Covid to drastically cut supply for some fixed time interval. That agreement hurt our economy coming out of Covid.
(3) Consumers completely changed their behaviors and the supply chain had lots of random kinks in the flow of goods. Some countries still maintained closed borders. Ports had months log backlogs of ships waiting to offload cargo as shipping containers were in short supply where they were needed.
(4) The price of eggs and pork were massively inflated because of avian+swine flu outbreaks which we normally deal with by killing the entire flock.
(5) The west coast had a massive drought and a terrible fire season. This was awful for farming/ranching and we still haven't rebuilt the cow herds that shrunk from those years.
Biden's regulatory regime had almost nothing to do with the efficiency of the economy during his term. Just because he didn't open more of Alaska's wilderness to fresh drilling or because he didn't approve the KeyStone XL pipeline didn't have any noticeable effect on the US economy (except perhaps to keep some more truck drivers employed).
When we were coming out of Covid, Biden just needed to ease regulations temporarily and do anything to get businesses functioning again. Instead, he listened to his radical base and punished companies with more regulations and taxes. Immediately shutting down the Alaskan pipeline was another mistake.
The end result was the start of the shitty economy and job market we see today.