Given that there's a billion dollar smear campaign going on around this subject, it feels safe to assume that many of these laws have good reasons to exist and are in reality effective.

I'm not denying that poor laws and regulations exist and have negative consequences, just that the probability that any specific example exists, compared with it being an example of someone who learned about it from a focebook meme or hard-right newspaper opinion column and decided to repeat it on the internet in an angry game of telephone, is quite low in my experience.

But, you never know, maybe I can Google it and an actual reputable source that genuinely cares about the effectiveness of climate change legislation will have reported on this.

That's assuming the laws even have anything to do with climate change. Commonly laws intended to do one thing are re-interpreted as failures to do another completely different thing.