I don't know how you can say that when some of their most recent well received games include Tomodachi life and Rhythm Heaven. Those aren't the kinds of games made from those maximizing bean counters.
Yes. And an environment like Microsoft wouldn't think a dormant, niche franchise like that would be able to achieve an overwhelming success after 2 generation.
But sure, if you want the last new IP, Nintendo has played it safe with Arms and focused more on bolstering dormant IP's on the switch. With Animal Crossing and Zelda in particular finding new winds. Splatoon was their last huge success as a new IP in 2015.
Labo came in 2018, but I have no idea how to evaluate the success of that.