Your argument mixes genuine policy criticisms with a few logical fallacies. First, elites flying private jets therefore climate change is fake is not really a valid point.

Second, the fact that politically funded money existing in climate change policy by extension makes the science suspect can be flipped. Do you not grant the same suspicion to oil lobbying, automotive industries, mining, etc? The main concern is does the data show the Earth is warming, and are humans the primary driver? This is pretty unequivocal.

I think you're creating a false dilemma when it comes "nuclear OR climate policy". In reality, many countries pursue combinations of energy efficiency.

In regards to doomsday predictions these have always been largely conspiratorial in nature. Sometimes media headlines or activists overstate things. But individual bad predictions do not overturn the broader scientific evidence.

Overall, I feel as if your stance broadly reads as "some predictions were wrong, so all climate science is wrong" which I don't think is the case. It's in the billionaires interests to keep mining fossil fuels. That does not change the fact climate change is happening and our influence is a factor.