Compared to today, certainly. While much of the optimism was founded on good timing and illusions, during that period the American zeitgeist was genuinely optimistic about the present and the future. The Cold War was over, there was finally traction on social justice issues, the nerds and weirdos were triumphing, the economy seemed to be under control. Right-wingers who wanted to Make America White Great Again were dismissed as cranks. And of course, you could put a bird on something and call it art:
