Any large group is composed of different motives; here are a couple of possible ones:
- Renewables are not, or not nearly as much, big profits for big business. They don't require the capital investment of fossil fuels or nuclear, and therefore they don't have the large moats of those businesses.
- Anti-liberalism (or reactionaryism): Destroying liberalism is an openly stated goal for which many will sacrifice singificant wealth and cause significant harm. Nuclear is counter to anti-nuclear liberal campaigners of yesteryear (I think conservatives often have little idea of changes since the Cold War era; they still talk about 'Communists', etc.)
- Renewables are not, or not nearly as much, big profits for big business. They don't require the capital investment of fossil fuels or nuclear, and therefore they don't have the large moats of those businesses.
- Anti-liberalism (or reactionaryism): Destroying liberalism is an openly stated goal for which many will sacrifice singificant wealth and cause significant harm. Nuclear is counter to anti-nuclear liberal campaigners of yesteryear (I think conservatives often have little idea of changes since the Cold War era; they still talk about 'Communists', etc.)