1. I love how students or people who dabble in editing know more (and better) than award-winning and clearly established filmmakers who they'll never work with someone even half their caliber.
You really cant use that as an argument.. "this guy has won awards so dont question or criticise him." Not fair. To play devils advocate you also don't know who's posting or taking parts in these conversations.
But to offer a less personal response to your statement.. I am going to present you with a scenario. I myself am in the "business" haha, so here goes:
1.) Studio pays X amount of dollars, and has X amount of time to shoot a scene.
2.) Scene is shot.. On the editing room floor its discovered that there are continuity issues.
3.) Oh crap.. Wally isn't happy but the issues are extremely minor.
4.) It costs millions of dollars to re-shoot said part of scene X.
5.) The scene is left alone.
My point? Movies have errors in them all the time, Nolan is no different. It has nothing to do with style or preference, there's a reason people are hired and paid a lot of money on sets to do "continuity." The reason the errors stay are almost always monetary.
MONEY X TIME X Your average VIEWER not noticing = mistake left alone
If its crucial its changed, its often not.
It's also important to acknowledge there can be mistakes made that aren't always artistic choices. A double cut is an artistic choice, I'm sure Nolan knew he was flipping the truck twice. That's ok.. you can say "stinky choice!" or "great choice!"
What's not ok is when Batman has 2 cop cars behind him... one of them crashes.. and now we cut to a wide shot of 3 cop cars behind him. On a subconscious level you know a mistake was made and that's the kind that it's ok to call a mistake. I seriously doubt Mr. Nolan did that on purpose to screw with viewers.
So in essence, I believe there can be errors in art as well.