That is is paralysis by analysis. Its trick the intellectually bankrupt resort to when they want to seem insightful or somehow smart.
Different people are going to tolerate levels of adverse consequences differently is obvious. That goes for the short term and the long term. In the end that fact is inconsequential what matters is what is acceptable for most people or what matters for the people in a position to affect outcomes.
That fact the 1.2 degrees might destroy the economy of some island group someplace when most of us think we will be okay at 2 degrees and the short term consequence of action is more acute. Means that tiny minority just does not matter. In the end they won't get their way, so I say they really are not worth thinking about.