Part of it is the game just being so huge. Most people aren't even going to hit Act 3 until 50-60 hours in which is already much longer than most other games. So you've already formed your opinion of the game by the time you hit the less polished part.

And to be fair, those first 50-60 hours are pretty great. (Minus some gripes with things like pathing and inventory management) If the game just straight up ended with Act 2 I would be completely satisfied. I didn't even mention this because I wanted to focus on the bugs but even narrative, pacing, and quest design in Act 3 is just so rough compared to the other two. It almost feels like a different game or a different developer. The quality drop is that drastic IMO.

I am worried that other studios might look at this and realize they can just front-load the best content and all the polish in the first section and neglect the rest to fix later. It sets a bad precedent.