There are no life-or-death consequences to denying evolution or global warming by individuals. Your worldview may help you orient your life, comfort or intimidate you, or whatever. But (in our country, at least) you don't go to jail for being stupid, for not accepting the truth of evolution (or for being too zealously deterministic about how evolution works).
Society may gain if people adhere to some coherent ideology, even if it's contrary to facts that are already known. After all, society functioned up until 200 years or so ago, without any knowledge of evolution in the modern sense. The Greeks did perfectly well before Christ was born, and the Christian world did perfectly well before Mohammed or Joseph Smith came along to claim to provide correctives.
Of course, 'perfectly well' means society functioned. They had awful murder and mayhem, disease and unfairness and dishonor, as well as good things in life. But there's no evidence that society does better with one ideology than another--on a general level.
Even in a purely religious state, that denies evolution of species, health care research on the 'evolution' of antibiotic resistance can go on, and so on. Things might be a bit different in regard to global warming, because the future may well depend in various ways on whether we act according to warming warnings or not. But even if we are climate ostriches, society will adjust to the disruptions and trauma. We've always had disruptions and trauma.
So, if we're not just being tribal about our own ideology, what is the point of railing against those who don't believe in evolution? That such is a benighted way to view the world, even willfully so since the facts are there for anyone to see, shouldn't upset us....unless it's because we fell threatened by that particular tribalism (remembering, for example, witch trials and auto da fe, done in the name of religion).
When one takes a broader anthropological perspective, is railing against evolution any more harmful to people's lives than hating the Yankees?
Of course, for those of us who try, at least, to understand the real world as it actually is, including the fascinating facts of evolution, those beliefs are important to cling to, at least for personal edification. And if we make our living that way, it's not so different from making a living as a minister....