Glad to hear he's proud of his success and happy with the community's reception to his game, but I feel like he should have more than one game under his belt before he starts saying stuff like this. He kind of seems like he's counting his chickens after one of them has hatched.
For what it's worth, judging by the sales charts and comments from developers like him, I do think that the typical eShop customer pays attention to critical reception and seeks out high-quality games. I'm not saying this isn't also true on other platforms (though I think most of us can agree that it's certainly not the case on mobile devices). But it's a great thing if developers feel that the quality of their game is the most important factor in driving its sales, that they don't need to have a AAA budget and major marketing support from the platform maker to avoid drowning in obscurity.
