In some ways yes, but in others, some BA books were leading the way, and just ahead of US mass market pop culture.
Sure, GL/GA 76 was in response to the 60's flower power movement, and the Easy Rider bookend to the hippy movement, but remember that comics were (at the time) a mass market medium, and there were trends at Marvel that only showed up in studio movies a year or more down the line.
Comics creators must have been at the cutting edge of pop culture at the time, getting their influences from small indy and international creators, rather than following the US media.