People who didn't play Fallout 3 or don't follow the Internet for updates are the ones who are having problems. These are the majority of players. Not you.
You can quote Bethesda/Obsidian all you want, and say players that are complaining should have done x or y. It doesn't change that the complaint it merited.
It's still their own fault.
"But how could they know that DLC's were coming later down the line?"
Maybe they didn't.
Still, the pop up is there for a reason.
To make sure that the player knew this was the final quest.
And to make a save before taking it on.
Players failed to notice it then it's their choice.
Action and consequence.
I can't blame my brother cause "I" fell on the ice.
I can't blame Bruce Willis cause "I" thought Toy Story 3 svcked.
I can't blame Bethesda cause Red Dead Redemption was a piece of crap game.
I chose to venture out on the ice, I chose to watch Toy Story 3 and I chose to buy RDR.
The player choses to save or not save no matter if there is a DLC further down the line.
They even gave players a pop up, which a lot of older games does not do.
And the player doing research?
Again, their own fault.
Whenever I buy a product for more than 100 kronors then I always research it a bit before buying it.
So if someone buys a game or DLC just cause "They "assume" it's great" then it's their own fault for assuming anything.
And FO3 was a pretty big game (hype wise) and it's DLC's were as well.
I'm guessing most RPGamers knew about FO3.
If you knew about FO3, then you knew about the DLC's.
Considering this is a new cash cow, why wouldn't it release DLC's?
It was a given.
And if someone didn't play FO3, didn't know FO3 had DLC's, then bought New Vegas and even thought reading the pop up at the end he STILL continued in there without making an additional save then it's still his own fault.
Later he finds out there's a DLC, he buys it cause he forgot about the pop up (Don't see how it's Bethesdians fault he had bad memory or less perceptive memory) and then proceeds to start his save and gets mad he can't leave Hoover Dam and blames Bethesdian that he can't play it cause "he" didn't make a save before the final quest.
I still don't see how it's Bethesdians fault.