My high level take on this saga is: welcome to the Chinese century.
It's very common for companies that are failing to adopt uncreative reactive strategies that hasten their collapse. Look at the history of Kodak for some good examples. MAGA is that for the United States -- respond to the challenges of the new century by going back to the 1950s. MAGA (and Project 2025) is going to turbocharge American decline.
The pathetic thing is that while the US (like everyone else) has significant problems, it was not "failing," but we decided to do this anyway largely because of culture war panic bullshit.
Before this, America was in a place where it could credibly have continued to hold onto its global power. Its higher birth rate combined with a high immigration rate from all over the world meant its demographics were much better than China's. It was the world's #1 destination for high skill immigrants. The dollar is the global reserve, and that's hard to unseat due to network effects. Its military is still the most powerful. It still has an edge in many areas of high technology. Its universities are still arguably the best. It's still arguably the center of global pop culture.
Now it looks like we will systematically forfeit all that. We'll close our borders to general migration and will no longer be an attractive destination for skilled immigration. By removing reproductive rights I predict we'll actually decrease the birth rate by driving people to sterilize themselves (already happening) and driving a further wedge between genders (see the Korean 4B movement). The dollar will start losing ground. Our military may stay dominant for a while but will gradually slip with everything else. We'll gradually lose our technological edge to brain drain and lack of high skill immigration. We're going to run some kind of culture war purge on the universities or maybe even defund the best higher education system in the world. We'll lose our cultural edge because right wing culture warriors will drive away all the artists.
Imagine Germany without Naziism where they drove away or killed all their intellectuals. Imagine if Weimar Germany with its incredible intellectual and cultural scene had recovered economically and remained functional. They had the greatest minds in physics, philosophy, psychology, mathematics, and many areas of engineering. It's likely that without Hitler Germany would have developed the microprocessor, ArpaNet and Silicon Valley would have been German, the Germans would have landed on the Moon, etc.
Muscular reactionary politics is a cult of what looks strong, not what is strong.