If players believe the hype and marketing of any game then they have some fault. Could it not have been over hyped? Sure. But removing any personal responsibility for blindly following hype is silly.
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Yes. People that expect to much are at fault for expecting to much. How is that even a question? Money doesn't mean quality. AGS has no released games that did well. The only one they did release for PC was moved back into beta and then ultimately cancelled. Money isn't the issue here. Believing hype and falling into it is partly the responsibility of the players. Part developers who over hype and part players for falling for it.
How often is it said that people shouldn't pre-order because it sends the wrong message to developers? And now we have the opposite position from you saying that it is the fault of the developers at all times. New World is an average game. If you paid attention to the actual design and development it would never have come across as a WoW killer or "greatest thing since sliced bread" type of thing. But hey it can't ever be the fault of the players because they can't possible think logically about stuff they consume.
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What developer can deliver content faster then players consume it? The game has been out for 3 weeks. Name one developer that can meet that schedule. Players can have unrealistic expectations and to deny that is possible is just silly. Could there have been more quests, dungeons, and end game stuff in the game at launch? Sure. But it isn't that important if they have a good plan to add that stuff post launch.