Context plays a big role: The world moved slower then, so the hippie movement was huge and iconoclastic relative to that. It was also a big deviation from post-war Americana’s 50s attitudes, where people wanted to live, live well, succeed, and settle down.
The introduction of the internet, smartphones, and social media, are each potentially equally disruptive to life as it was before, combined the three of those make for a 20-30 year paradigm shift that likely dwarfs the hippie movement and the sixties. Technology will continue to (d)evolve and we’ll have further evolutions of the same that will in their own right change paradigms as well.
So you’ll say, technology isn’t a movement. The hippie movement and it’s effects on American society from 1955 to 1975 go way beyond those who belonged to the movement.