The idea of a dream culture is consistent with a lot of my writings, such as the ones on culture as a mass hallucination, and on the prevalence of fictions (links below).

Nomadic clans of hunter-gatherers survived for some 2.6 million years in the Stone Age, so obviously that's a stable way of life. But it's not "civilized," so the question is how we define that word.

https://theapeiron.co.uk/mass-hallucination-and-the-dream-of-waking-life-a7520e48ca5d?sk=8f1a9f6e56497a7996cf6f3b6724c135

https://medium.com/the-apeiron-blog/saturated-in-fiction-consensus-reality-as-a-web-of-stories-485d6e00f7e7?source=friends_link&sk=a398071fd9f19826fcae2157f85d4474