At its basic core, sure. But this isn't telling a story around a campfire. This is a serial drama made for television. Less room for narrative detours to flesh out characters, context, and backstory, than a novel, sure, but I think it's a bit silly to say there's no room for them either. Which, before you say it, I'm not saying that's what you're saying but even the term "non-essential" presupposes that every narrative choice must be essential to the progression of the narrative, but that's not what makes a good story. All the best shows have "non-essential" scenes that exist only to build the world the characters occupy, develop said characters, and/or help the audience understand and form connections with the characters better. Granted this was a whole ass episode but just because it doesn't serve one storytelling purpose (pushing the narrative to point b) doesn't mean it doesn't adequately serve another (developing one of the two main characters).