Again, Scalzi hits it out of the park. The premise is wonky, and incredibly silly, but the responses of the characters in reaction to the event seem entirely accurate to if such a situation actually arose. I loved the nuance of each character’s perspective, and how the writing shifted slightly in response. The vignettes offered not just a diverse take on what was happening, but showed a vast expanse of humanity in their responses: how to deal with an impossible reality, the utter insanity of it, the implications (scientific and otherwise) of such an occurrence, and then the nature of what our lives mean in a doomed world. 
It’s still bitingly funny, but the way the book approaches the topic veer from ridiculous speculation to a far more solemn, philosophical speculation that I think will resound for a while now that I’ve finished it. 
And don’t think I didn’t notice the strangely prescient line about unsecured text chains. The book could not have come out at a more on-the-nose time, despite the fact it could never have been predicted. 
Though no one would have predicted the moon turning to cheese, either.