This is goofy. If you don't want a stern don't buy one, if you have one you don't like, sell it. EVERYONE knows that code evolves over time and there's no guaranteed timeline. If you knowingly buy a game then you know full well it may be a while until the details are all finished and you made the choice to buy anyway. Over time, stern tends to do a big update on all their recent games to flesh out the details. If it bothers you so much, then don't buy the bloody game until that update is released.
JJP is no better about 'finished' code, nobody else has even managed to finish a game aside from Spooky.