The pressing issue of this time is what is the path to cultural restoration, and you can't do a cultural restoration while you have massive amounts of immigration.

Why restoration, and not building something new and well-adapted to the knowledge and needs of the 21st century?

But the current state is unprecedentedly amazing technology and knowledge wise.

The ideal culture, given 21st century technology and 21st century knowledge about how to do culture, is likely to be very different from even the best-performing 20th century culture. So we should try to reach that new and better goal.

hmm maybe some concrete examples:

* The optimal work culture in a world with AI, remote work, digital tools, etc is different from the optimal work culture in a still largely manual labor world
* The optimal sexual culture given 5+ distinct types of birth control (and disease control) is different from the optimal sexual culture before those things
* The optimal political culture given modern very high levels of communication tech, and much lower difference between ability to communicate with physical neighbors and ability to communicate with people across the world, is different from the optimal political culture before that
* The optimal food culture given modern knowledge about health, preparation techniques, availability of ingredients etc is different from the optimal food culture before that

So I'm just not sure how useful "replicate the 1950s" (or 1850s) is as a North Star™

The moral and religious states are more important than the states of technology and economics. This decline is also resulting a very dangerous territory in both politics and society.

Human nature doesn't change over time. The Anglo-world reached a semi-ideal state and tradition at some point but was destroyed through the introduction of a totally new culture which some people thought was better than what was inherited.

There's going to be something new but it needs to build on the past, because it contains truth that has worked better before and the life that people have lived before is suprior to the emptiness of the modern way of life.