A Moral Quandary

Someone just argued that even if climate change is natural (nice of them to concede the possibility), such changes have, in the past (oh, dear, I guess that's an admission of sorts), caused upheavals to societies.

So, if it turns out to be entirely natural, and the result is to be the flooding of environmental strongholds like NYC and LA (sorry, I'll try to restrain the sarcasm), will they allow it to continue unfettered?

The commenter said we should "still be worried."

Which implies he would not.

A