First off wow, what a good movie, it was a very good satire of the whole covid-19 situation, climate change, and a whole other bunch of looming catastrophes. The main gist of the story is people are willfully ignorant until the truth is right in front of them. It reminds me a lot of Idiocricy, Dr Strangelove, or The Network in tone, honestly I think it's gonna be a cult classic in the future when we can look back at the events of 2020 in a less biased way.
So to get into the juicy bits, Leonardo DiCaprio's character basically lies to everyone despite knowing the truth for profit. I don't think you can watch this movie and not make the connection, did Fauchi not lie about the masks or the lockdowns or about covid? He used his fame for the worse, hell everyone in power in this movie lies for their own benefit. The Trump character is a woman who is completely owned by private interests, there's the Steve Jobs clone that essentially wants the asteroid to hit Earth for the minerals on it, the slimy news reporters who are more concerned about bullshit stories than the literal end of the world, the celebrities who are so brain dead they sing about how they are gonna die because they can't do anything about it.
It was one giant satire about the sorry state of the world and honestly it makes you want to pick up a gun and shoot someone with a blue checkmark on twitter, if that wasn't the message of Don't Look Up I don't know what you were watching, better than the matrix, I get it 5 pepperoni nipples.
A very Much Ado About Nothing ending, with the rest of the world celebrates while Americans continue to submerge themselves in celebrity gossip would have been a nice twist.
Just having a low keep "real heros were in the background the whole time" motif could have been a fun gag.