This sets a terrible precedent. It's basically how you guarantee future failure. If you teach an audience that you can't be trusted to support your games, or even release them in a timely fashion on a platform, then that audience will not buy your games on that platform. This is how you set in motion your inability to succeed on a platform and everybody does it on Nintendo's home consoles. It's like they don't want to succeed on Nintendo consoles so they set themselves up to fail.
I wouldn't go that far, but I think in the eyes of third parties, they really view Nintendo as unnecessary. If they can make a few bucks on a Nintendo console, that's cool, but they really are quite happy with the current Sony/MS paradigm where they don't have to face competition from 1st party games and they already know they have a willing customer base.
It's really past time for Nintendo to just expand their internal studios(and commission select third parties for exclusive games), because it is obvious they cannot and should not count on extensive third party support. If they want a diverse and flourishing ecosystem on their home consoles, they have no choice but to make it themselves.