Mario and Zelda creator Shigeru Miyamoto thinks people don't really care about console specs all that much anymore.
Since the GameCube era, Nintendo seemingly hasn't prioritized having the most "powerful" console. Perhaps this approach is a lesson from the PS2 handily beating it despite being the weakest console between it, GameCube, and Xbox, and the massive sales success of the DS, which dwarfed the still-very-much-successful PSP. The Wii and the Switch proved that innovation works even in the face of being weaker consoles (and I'm sure the Wii U could've done well with a better name, but at the very least, it paved the way for Switch).