Simply being unfunny (to you) doesn't make it like BBT. That show also employed laugh tracks to pretend it was funnier than it is (maybe you could find something comparable on the audiobook but you can't put that on the book itself and idk because I don't listen) and a lot of misogyny and other humor about stereotypes (which if DCC has, it's done by characters that are supposed to be problematic).
And yeah the struggle is coming, one thing that's easy to forget is everything happens on a fairly short time frame within its universe. That being said I controversially don't really like the audiobook mostly because I don't like the chosen voices for Carl or Donut. Makes Carl seem like some badass action hero type (whereas I see her as more of a bumbling tinkerer), and it makes Donut seem like a cartoon character (when he's a sassy teen who grew up in pageants and is trying to make sense of her newfound sapience and how to have real conversations with people).
Also "most monsters are only a derivative name on a 2-3years old meme", yeah that makes sense, book 3 came out 5 years ago.
Obviously you don't have to like it, but I disagree with your comparison and some of your interpretation and wanted to voice that.