I've heard these arguments: (a) that we don't have the evidence to confirm that climate change is anthropogenic, and (b) that we shouldn't change our behavior. My understanding is (b) is not tied to (a), but rather that most claims of (b) come out of different views on conservation, what "nature" is, what's achievable with technology, and how different approaches to climate change might impact human quality of life.

And (b) is not really that we _shouldn't_ change our behavior, but that the most popular ideas for how we should are varying degrees of infeasible, harmful, or fascistic.

The "right" on this issue is largely misunderstood. Those pushing for a shift to renewables and a lifestyle change in wealthier nations deserve better literature on what their opposition is advocating for and against: https://compactmag.com/article/energy-lysenkoism