The details and mechanisms make sense and are useful for making possibilities more vivid, but I think the very high-level argument seems strong to me and does much of the work:
Social, values, and institutional change is significantly caused by technological, economic, and demographic changes.
After a period of rapid transformation through the intelligence and industrial explosions, and space colonisation, the pace of technological, economic and demographic change will greatly slow.
C. The pace of social, values, and institutional change will greatly slow. Therefore, achieving a good state before the rate of change slows is very valuable.
The details and mechanisms make sense and are useful for making possibilities more vivid, but I think the very high-level argument seems strong to me and does much of the work:
Social, values, and institutional change is significantly caused by technological, economic, and demographic changes.
After a period of rapid transformation through the intelligence and industrial explosions, and space colonisation, the pace of technological, economic and demographic change will greatly slow.
C. The pace of social, values, and institutional change will greatly slow. Therefore, achieving a good state before the rate of change slows is very valuable.