With 14 million units sold, are you surprised by Nintendo's silence for a possible Ring Fit Adventure 2/DLC?

No. Nintendo's general attitude towards some of their franchises are "they've made that game already".

For example the last F-zero game to come out was 19 years ago and that's particularly popular amongst Nintendo fans.

https://screenrant.com/f-zero-series-sequel-new-game-nintendo/

In 2012, Shigeru Miyamoto was interviewed by Game Kult, and asked about the possibility of a new F-Zero. He gave a disheartening response, as he wondered why fans would even want a new F-Zero game, as he felt everything had been done with the concept.

Nintendo will be asking what innovations would a sequel bring to the table and whether taking the risk to go into to development would be worth it.

/r/RingFitAdventure Thread