I kind of understand the point the article is trying to make. It would have been great to see Nintendo not only announce a new IP for Wii U but get behind it 100% and try and push it to the public. It didn't happen, though, but I guess that's ok, because it appears to be a good release schedule in the future. Seems like a missed opportunity to me.
I worry more about Nintendo when they get into the habit of milking games. I don't believe they've done it recently until the Mario stuff (NSMBW, 3D Land, NSMB2, NSMBU, and now a new one at E3), although 3D Land and the most recent one have been fantastic. Honestly, though, I see that being no different than what other companies do. That's my problem with the article--this is the current state of the industry. Everybody does this. It's not a Nintendo problem--it's an industry problem.
Plus, my other issue: Why bother trying radical changes when A) They might not sell and B) People complain non-stop about them?
Remember Mario Kart Double Dash? How about the backlash over Paper Mario Sticker Star for not having partners and RPG elements? What about the wolf element in Twilight Princess? When Nintendo has gone for major changes, it seems everybody finds something to complain about.