Season 1 had such a distinct narrative style that let us start directly with action and interaction of the characters that I almost feel like PIzzolatto didn't know what else to do, so he figured he'd just go ultra conventional. This felt like your typical hack fantasy-novel opening where you get a bunch of expository backstory on several individual characters, are informed of the mutual threat, and then those characters meet up at the local tavern at the end of the first chapter.
It's a structure people are used to, sure. I don't think that makes it better, though, just more comfortable.
This opener was just information and situation, which I don't find nearly as compelling as just starting the fucking story.
It was a fucking pilot. A prologue. The more I think about it the weaker the episode was in general, but especially compared to season 1. I'm not an idiot. I don't need a story set up. I just need you to start it already.