The review sets up and argues against a straw man, that the main theme of "Don't Look Up" is "believe science."
The main theme isn't "believe science" and most characters did believe science, but simply wanted to and maybe psychologically needed to avoid the harsh light of reality. That's the first part of the main theme: that people aren't able to face reality, especially mortality, and so we seek shelter in distractions and insincerity, inauthenticity[1] and bad faith. The movie also suggests that this dynamic is exacerbated at times by society, and now has become one of those times, especially because of our media and maybe our form of capitalistic "democracy," and that this prevents us from acting rationally on a collective scale.
Something like that, sorry I have no time now to clean that up, but I do think it's an important discussion.
[1] https://plato.stanford.edu/entries/authenticity/
