Nintendo is fine, 3DS is a beast, Wii U is not.
Nintendo can still produce their first party games for Wii U it doesn't matter for the fans now, and Nintendo is still supporting Wii U even better then SCEI in supporting PS Vita.
It's not a big stories anymore, and all Nintendo fans doesn't care for the 3rd parties games anymore and their first party can sustain and support the same amount of third party games on other platform.