At this point, or perhaps not too far off it's like opting out of electricity, or the automobile.

Sure you can. But you're going to have a bad time.

And then the Amish see the world around them using electricity and cars and think, "Yep, I'm happier without that." And they're one of the few groups on earth with a growing population, so they're doing something right.

1. Your assumption that a growing population is the metric of success is questionable. A population that grows but is subject to famine, epidemics, and natural disasters because they haven’t developed the scientific and technological capacity to escape the existential risks of the physical world is living on borrowed time. Not saying I agree with that, and I would actually agree that there is merit to the Amish hypothesis that a certain existence is more compatible with individual and societal fulfillment. But there are obvious counterpoints.

2. The Amish are not a good example because AI will confer an advantage to those that control access to it that has never existed.

>Your assumption that a growing population is the metric of success is questionable.

It's a better measure than GDP/S&P/401(k) line-go-up especially [re: America] when the native Euro-based population has been aging and dropping for decades, once you strip away all the post Hart-Cellar immigrant lineages.

What are hart-cellar immigrant lineages? And why is that in anyway relevant?

Let’s play a thought experiment.

Let’s say we have a million people that are so technically sophisticated that they are a space faring civilization capable of seeding the universe with living ecosystems capable of perpetuating life and evolutionary processes. But they are entirely infertile and will never give birth to another individual of their species.

And we have another population that doubles every single year but is incapable of leaving their home planet.

Which one is more valuable?

It depends on what your measure of value is, but if it is to maximize the amount of life in the universe, then population growth is not the right metric, expansion of life through technological means is the more appropriate metric.