No, you have it all wrong. This is how it works on the Bethesda forums:
If you began playing Fallout with the original games, everything wrong with New Vegas is Bethesda's fault.
If you began playing Fallout with Fallout 3, everything wrong with New Vegas is Obsidian's fault.
Please don't make this error in the future; reasonable responses are not tolerated here.
and how many of those glitches/bugs/freezes are down to Microsofts Xbox api, Sony PS3 api, graphic driver errors etc etc? Seems to me the PC version was the most stable of the lot this time around (can't vouch for FO3, but that was pretty good too on PC). To be fair to both Bethesda and Obsidian (and Bioware and Uncle Tom Cobley and all) writing a title for THREE platforms must be a nightmare. Just thank the gods they don't have to put Wii and DS into that mix too, we'd be here forever.
I'm inclined to cut them some slack as far as bugs go. Not as far as DLC go though... they've already announced HH is finished, so give us a trailer already! lol