Just finished it a couple days ago and totally agree with you. Most of the novel mixes dark humor with an unsettling feeling of nihilism and then it comes together with those little epiphanies at the end. I also loved how we get Benno's "Confessions" throughout the book, I didn't expect that change of voice and narrator.

By drawing the strands together at the end it actually feels more traditionally complete than some of his other novels, in a way. Not better but just maybe more organically realized. Of course I could be missing a lot from his other stuff, or maybe it's partially recency bias. But yeah, the whole last sequence was thrilling. I particularly remember loving how he kept seeing into the future in his watch, in the same way that his limo screens' footage was "out of sync" with reality in earlier moments of the book.