> The people who were opposed to the environmentalist worldview were in favor of nuclear, but also in favor of fossil fuel generation

Yes, I agree there were (and still are) people with that view. I said "contributed to" not "the sole cause of"

But I distinctly remember very organized activisim opposing nuclear power in the 1970s. I don't recall much if any opposing new coal plants. I'm sure there was some but they didn't make many headlines.