There’s always the Lizardman Constant[1], and on top of that there’s people demanding unreasonable perfection of data, sure. But I think the post you’re replying to has a good point: public opinion of “public health” has taken a significant hit in reaction to the handling of Covid, as more information came out that contradicted earlier messaging (vaccine confers immunity -> vaccine lessens symptoms, most notably). It seems prudent to acknowledge the same could happen with climate change!

1: https://slatestarcodex.com/2013/04/12/noisy-poll-results-and...