Anyway, the vast majority of climate scientists and economists don't think that civilization will collapse. Maybe they aren't "polymathic" enough for you. Even if they entertain the possiblity of collapse, they aren't certain about it (again, compare to the linked article).
At any rate, the idea that scientists can model the collapse of civilization is silly. We can't model the market and civilization is much more complex.
> Casting the group as expecting some absurd "population collapse without civilization collapse", or cheering on a massive societal regression, is a clear signal your sample set is biased.
I don't know what the first part of this means. There absolutely is a "collapse community," well represented by the linked article and elsewhere on the internet, and I think it's very clear that they eagerly await the collapse for transparent psychological reasons.