Just because a game is good does not excuse technical errors that could of fixed before releases. No excuses please. I've heard them used by every company.
Skyrim is not 100% bug free. There is a trade off between time, money, features, scope and polish. To get a game technically bug free would require that they either cut down the scope (ala Dragon Age 2), charge much more for the game (5x as much say), or work on the game for five times as long, by which time it would look ancient.
If you want that, there are other games which satisfy most of those preferences. That's fine - I won't argue that they should be different. But I also like variety in games, and I want some games to be large in scope and features like Skyrim. Just as I'm not arguing every game should be like Skyrim I think it's unfair to argue every game should be like Dragon Age 2 (or whatever technically perfect game you are holding up as golden).
Skyrim is a fantastic experience out of the box - capable of giving 100s of hours of fun. That's already great value - that the game is being made even better is a great bonus - if you need that to make the game value for you then simply don't buy the game on release . Skyrim is already the most polished Bethesda game on release, so unless you are completely blind to previous releases you can't have expected better.
Back on topic, it seems the patch is largely great - but one bug seems to be emerging with some kind of sound effect buffer playing when opening the map. Hopefully they'll fix this before release. The other gains (CPU optimisation, save game corruption fixes, etc.) all look fantastic, unless you're already dicking around with lots of non-toolset mods and injectors in which case you've got a chance of having mucked up your game.