You're right. There was a crossover. Boomers born in 1964 would have had parents between 1928 and 1945.

Boomers born in 1945 would have had parents in the previous generation.

I believe you're talking about America only, but the world is bigger than America.

I take your point that most boomers were as materialistic as the previous generation, but they still did nothing about climate change, still took the pill, still broke sexual taboos, still did away with respect for the elderly, etc.