Nonsense. The story for QUANTUM OF SOLACE is rather bare bones, but it does very little with its characters, and crams the movie with more unnecessary--and thoroughly unengaging--action sequences than its predecessor.Quantum, for all of its globe trotting and occasionally clunky exposition (that Haitian dock sequence), successfully manages to keep the narrative tight and simple, allowing for more exploration into the character of Bond and his foil, Camille.
I'm not suggesting that the previous Bond films are flawless examples of storytelling, either, but QUANTUM OF SOLACE is particularly slapdash.
Though like everything else it is a matter of opinion, I hardly consider the car chase, Palio sequence, Tosca eavesdropping and shootout at the Perla de las Luna unengaging. These were master class set pieces, scenes that showed some level of artistic ambition (the point of film, though one can argue not the point of a Bond film).
I will concede that Quantum is a relatively shallow affair when we look at characterization, but it's certainly not among the worst examples in the series. If you are going to discuss characters, then you have to bring up the script, because that is where they exist-on the page. More could have been done with the Fields love scene, Camille's backstory and Bond's emotional state, but the filmmakers showed restraint because they didn't have a script, and they wanted to craft an action film first and foremost. Casino Royale is a fairly traditional Bond film, with characters (Eva Green's Vesper aside) that are just as one dimensional as Dominic Greene. The narrative is Quantum is certainly not slapdash, it's plotting, in fact, is on par with the rest of the films, possibly even simpler. A small threat is a pretty big change to the Bond formula, I hardly consider it slapdash.