IIRC he said he had expected some kind of alternate hippie-economy based on genuine values and having ownership of the neighborhood, and was disappointed that he didn't see any evidence of that. Just a bunch of idle people.
My uncle had the same description. Disappointed that it was just stoned people and not a lot of real substance.
https://genius.com/The-mothers-of-invention-who-needs-the-pe...
Then there's the fact that even the 18-20yo "Hippie Pilgrim" demo, which has held up pretty well for generations, is secretly stratified by the socioeconomic status of the parents. One's take on it depends on the specific cliques they're exposed to.