and with the book's few obscure hints at quantum physics, which seem to be put in here and there not to make anything any more clear, but to show that he knows a few quantum buzzwords.
It's mostly there to show that certain plot aspects that I'm not discussing here because they're spoilerish, have a direct, scientific interaction with our universe, rather than a vague, unquantifiable spiritual one.
He doesn't necessarily have to understand quantum physics, it's not important. What's important is that one of the characters *does* understand it, and is able to say "This thing interacts with this thing on a quantum level, and therefore interacts with our universe in a quantifiable way." The books aren't hard sci-fi, they're more fantasy than anything else. The quantum stuff is a plot device, a footnote really.
Also, keep in mind that popular understanding of Quantum Physics has moved on a good bit since they were written.
As someone who has never read any of the books, the only thing I thought while watching the trailer is "Wow, those are really bad special effects."
Yeah, since the first time I saw it, the "Gee Willikers It's His Dark Materials!" shine has worn off in my mind, and I agree. Just read the books. They're better.