For most people here yes (myself included), but I'm sure that if someone here manages to make an interesting game with a working concept behind it that it has a really good chance at getting accepted.

There's a bunch of 2D games there too and although those are great and polished games mostly it's perhaps not as dreamy as you think it is. I'm not talking about the 2D of the games, but I don't think all games on Steam are 'high quality games', there's just nearly no real crap. (Example: Culpa Innata on Steam)

Don't get me wrong, but I think your comment is a bit misplaced anyway because getting accepted on any game portal will require a 'good' game.

Cheers