Miyamoto spoke out against Developers doing just that. He brought up the point that developers have created the problem of poor sales on Nintendo consoles themselves. When Developers use their 3rd and 4th string teams to produce games for Nintendo consoles, they're going up against the 1st and 2nd string Nintendo teams all the time.
That's why their titles haven't sold all that well in the last couple of generations. If they would dedicate their 1st and 2nd string teams to bringing quality games out, people would buy them.
For a Nintendo platform more than any other, the "hardcore" nintendo fan base is used to high quality N' games, and buys those. Put out crap, and that fan base is conditioned to ignore it.
You mean against developers putting crap on their consoles right?