Check that it is actually there. I have heard doom monger predictions for over 3 decades and none of them have come true to date. I live by the sea and the level hasn't risen by any perceivable amount. 30 years ago I was told that major cities would be underwater by now.
Sure, but isn't the argument that the current situation is akin to a frog in a pot?
There's no hard threshold under this line of thinking and, I imagine, if something terrible were to happen to a vulnerable population abroad, then the west would react in a way which would enable its population to treat the issue as if it were "far away".
Rising authoritarianism would just seem like something related to politics in this hypothetical future. From there, any attempts at top-down mitigation would just seem like "bad guys with power doing things bad guys do".
