There’s a reason different genres exist. For some, not having a challenge or competition is inherently unfun, others might not have fun in single player games. Generally speaking a game that doesn’t challenge you at all though, isn’t fun for many. Not that they cannot be fun at all, Animal Crossing is one of the larger games around, but it certainly cannot fill the “game” void for everyone.
Just because they failed QA doesn’t mean they failed marketing or won’t be released anyways. That’s the big wigs forcing shit through.