Your experience does not mirror everyones experience... So.. this is not a valid statement.
However objectively, there is one issue that should have been anticipated.. and that is the one not prevalent on our platform (aka the lag bug on the PS 3).
To be honest this issue was an issue with previous games created on, for the sake of argument, earlier builds of their engine. So yes that one version should have been delayed.. because that was an issue which should have been anticipated. And Bethesda rightfully gets criticized for it by the press and fans alike.
On the 360, most issues, whether you like it or not, have to deal with the complexity of the world they tend to create. And they are working on fixes. Peoples experiences are always different. I had Zero problems with Either Oblivion, FO3 or FO:NV. Yet these titles are also notoriously buggy.
Same thing with Skyrim ... I have misc quests bug out, but none of the major issues.. and I know how to work around them... There are also numerous players without a single problem..
The only thing I like to see improved...: Better release notes with the patches.. (see FO:NV Bethesda!).
One Example; The radiant Role fix in 1.3.. What the hell did they fix.. I still have the same issues I had before (but know how to avoid said issues) (examples People)