While I absolutely agree with all those points (hell, I couldn't even remember the villains name when talking about it immediately after exiting the theater), I enjoyed the fuck out of that movie. Because the movie isn't taking it's self too seriously I'm more willing to let those things slide. It's kinda like watching a Jackie Chan flick. I don't know why he's in a pot and ladder factory, but it's fun watching it. Scenes like where they're fighting through reversing time or where they're trying to deal with the mirror dimensions bullshit have a similar vibe to me.