[intended]

I am curious how humanity is not affected as a whole by climate change.

You already said these are massive geographic issues.

Yet these different, large, geographic problems are of a size that doesn’t end up having even a remote effect on human civilization?

How? Is there some geography which is not impacted at all? A geography where a massive portion of human civilization is situated?

[KPGv2]

You're shifting goalposts or misunderstanding the discussion. Up the comment chain, the conversation is specifically centered around "the end of humanity." As in, extinction.

You're driving at changes to how we live.

Changes to how we live, even large ones, does not equate to "the end of humanity."