All I see are a bunch of complaints about how it's buggy with the examples being texture pop-in and floating enemies. The latter is serious, but reviewer doesn't mention how often it occurs. If common, you're right to call it broken.
Anyway, bugs can be fixed. I really have no idea why you're worrying so much about Fallout: New Vegas when Fallout 3 had such a dedicated modding community that made up for all of its bugs. If they don't release an editor, then you can start worrying. Todd Howard will be making Fallout 4 and Elder Scrolls V (I think), so you have nothing to worry about. Bethesda has tons of cash and this isn't one of their in house titles- they can handle it if it tanks (it wont due to their amazing marketing, though).
Edit: I might just be able to better tolerate bugs than most. So yeah, I guess you have your own idea of what a broken game is.
I just don't tolerate bugs much in a game if I'm aware of them before purchasing. I can deal with even the worst bugs out there if nothing I read about the game mentioned them, but when reviews mention a good amount of bugs like in Alpha Protocol, well, I'm much more critical of them. :shrug:
Don't get me wrong, chances are I'll still rent this, but I wont be buying it until I try it out and see for myself.