I’m not much of a sociologist but the outline sounds plausible. The cycle runs for 80 – 90 years and supposedly would describe the last two hundred and fifty years of American history if the author is to be believed. Just throwing it out there if you like that sort of thing.
https://voxday.blogspot.com/2020/03/the-fourth-turning.html
https://app.hedgeye.com/insights/58414-the-fourth-turning-why-american-crisis-may-last-until-2030