except steam quality already has taken a massive planned nose-dive already

The reason behind showing metacritic score, user reviews, and curator reviews, along with introducing a discovery system that considers the quality of the games it suggests, and pushing some of the approval process onto the users (greenlight), has been all to try and decrease Valve's position as an authority on game quality.

There are some horrifyingly poor games on steam already, most of which get removed after a bunch of people complain about it either a) being a scam, or b) being literally unplayable, after which no refunds are given and the game is removed from the store.

But bad games, who make truthful claims, are fine, and that is intended