What I've seen in the past is because the game released early certain files (like localization files/etc) aren't the correct version and so the game is really borked. Once the correct build or specific files are updated though the game obviously works better.
My good man, you don't need to justify the mistakes made by the developers. If the game someday reach a "playable" stage, tneh... Great for all of us. But this is honestly the most absurd case of an unfinished released game I've ever seen in gaming history - seriously, I don't recall any case equivalent to this, nowhere near. It's not just a matter of bugs, the game is literally incomplete, broken and unplayable. As a rule, it should have been complete weeks before launch, as this is a purely an organizational issue.
And even today, the launching day, the problems remain. Nothing can justify the release of a game in this state, it should have been postponed, possibly for a few *months*. This is the time I'll wait before deciding whether the game is worth being bought or not. The sad thing is that even with all the patches that it will recive (which hopefully are actually made), the damage has already been done. Quite possibly, the game will fail miserably after a disaster so monumental as this, and few will waste their time looking for it.
The first few days (and weeks) are always the most important moment to the success or failure of any game. And they managed to do everything to ensure that the failure would be inescapable. It would be a miracle if they can recover from this.