Entirely justified. I have a feeling that we're going to have to have a power drop across the industry at some point soon and Sony/MSFT (oh who am I kidding, they're out of this game) have painted themselves into a corner with a fanbase that's super attached to ultra-high-fidelity gfx. The shift across the board to hybrid systems/mobile APUs is going to be rough for anyone not named Nintendo, but in a best case scenario it means other big devs can put games out at a pace more comparable to Ninty these last few years.
Note, however- Nintendo also stockpiles finished games and announces/releases them when they believe market conditions will be most favorable, which does kinda skew how quickly it looks like they produce games. The TTYD remake was complete for like a year prior to its announcement iirc. Regardless, they still make more games in the first place than anybody else in this arena.