From reading these forums, Oculus is very picky about accepting submissions for the Oculus Store. Also from what I'm reading, they are in the process of integrating support for a second "store" for indie and hobbyist developers to sell their games that are less "curated" (but still follow Oculus content restriction guidelines). I understand it could be in place early next year.
That would be a nice step from Oculus. I think, they should provide something like that because if they separate at least a category or something like that for indie developers, than it would be a chance for the regular users to buy something they want and for indie developers too to publish their content in official way. For many regular users, the side quest is really complicated way to download and run games. And it's not official. Mostly the hardcore gamers take the trouble to download the games in that way. And most games, for e.g arcade games are not for that community.
Chris Pruett outlines Quest quality metrics in this video: