Yeah... the original Fallout's weren't well written. And the plot was the typical "Hero sent to discover magical artifact that can save the kingdom" kind of thing. The only reason why the originals were good was because despite how bad and cliched the writing was, they brought something that hadn't really been done before, at least not done since the original Wasteland was released. The dark humor... wasn't that great either. I loved the Monty Python references and some of the jokes, but most of what I've been told was supposed to be "funny", didn't even crack a smile.
And if you're being honest, you know this isn't the worst Fallout game... that's reserved for Interplay's Fallout: Brotherhood of Steel.
None of the Fallout games were ever really about survival. They were about completing a quest that started small (finding a water chip/GECK) and blew up into something big (stopping the master/Enclave).
Not really inconsistent. The BoS isn't there to conduct a rescue mission, I haven't gotten beyond the BoS showing up, but I think it's pretty obvious they are here for tech.
... no, the original Fallout's wasn't about the world, it was how the Vault Dweller/Chosen One's interactions with the world. And to be honest, even in the original Fallout's, the protagonists appeared to be the only person capable of completing tasks, from the mundane to the extreme. You could leave the most simple task in the world alone, and come back right before you end the game and it still hasn't been done yet.
But that's how these games are.