You completely missed the point.
Things like the Zapper, R.O.B. & Tetris didnt stop them from making games like Super Mario, Zelda or Metroid.
Things like Nintendogs, Brain Age & Wii Fit did not stop them from making games like Mario Galaxy, Twilight Princess & Metroid Prime 3.
Things like 1 2 Switch & Labo are not stopping them from making games like Breath of the Wild, Mario Odyssey or Xenoblade 2.
Diversity is important for any platform and every successful platform has had a mix of harcore, casual & casual-core software.
It does stop them from making bigger games though. Why make something that will cost us millions to make and sell millions, when we can make something cheap that will sell millions?
1 2 Switch and Labo will be forgotten in a year, but they can still resell BOTW and Mario Odyssey 10 years from now. That's why I think these kinda games should be their focus. They are so talented over there at Nintendo, so its sad to see their talent wasted on these non games.