Bethesda have never been good at quest design and the only good writer they had, MK, left after Morrowind. So I think there is some nostalgia goggles being worn in here. The "Fallout 3 had good writing and multiple ways to do a quest" line is especially lulz.
New Vegas had good quest design and writing, but then it lacked Bethesda's talent at world building and rewarding exploration.
Honestly Obsidian and Bethesda need to merge into one super developer!