I wouldn’t equate Robin’s perspectives on culture with reactionary movements or conservatism. If anything, he seems quite open to radical transformations of society (e.g. futarchy to replace parlamentarism, bounty systems and vouching to replace policing, private insurance policies to replace welfare policies etc.).
Whereas (neo-)reactionary / conservative thought simply often intends to return some previous status quo, Robin does not confess to representing such views and has not proposed such solutions. In fact, as far as I’m aware he hasn’t proposed any solutions at all as of yet.
Hanson seems to treat the global civilization as a cultural melting pot, but he does distinguish insular subcultures from that. I intuit he sees contemporary cultures on a gradient relative to global, hegemonic trends (which correlate with technological progress, increasing wealth and education) and thereby drifting pressures.