For purpose of discussion, assume that due to bad luck, this asteroid has evaded the detection of all amateur and professional astronomers until about six months from impact. The asteroid is too large to deflect with humanity's current spacefaring capabilities, and the general scientific consensus is that the impact will end all multicellular life on Earth.
What do those six months look like?
Yeah it's supposed to be a somewhat farcical allegory about our current response to the looming climate crisis and not just another asteroid flick.
The people in it are dumb in regards to their impending doom specifically because of how dumb people are being irl about their actual impending doom.