I'm somewhat surprised. This doesn't sound like Metallica. It's got a very raw, garage-band sound. I, for some reason, like it. I really like muddy, dirty guitar tones, too. I don't care if there are no solos. That ringing snare drum...I like it. But I'm not a die hard Metallica fan, and I'm not judging them by what I expect from them.
Don't get me wrong...I love Metallica's old stuff. Load and Re-Load were pretty weak. You're right, this doesn't sound like Metallica, but it IS Metallica, whether you like it or not. They play what they like.
Since when do the guys in Metallica care what people expect of them? After all, isn't Metallica's attitude what drew so many people to them in the first place? That whole "let's play the loudest and most obnoxious music we can" attitude? Well, this IS loud and it IS obnoxious. This is just another act of defiance. Classic Metallica attitude.