Without the Zelda and Advance Wars delays, we'd have 14 for the year; add on the 1-2 Switch sequel and we're up to 15; Prime HD would be 16. 15 of those games would be retail releases, too. Even without many more reveals, it's not hard to see 2022 having been closer to the usual standard without delays happening. As much as Nintendo have done a good job at consistently shipping software through the pandemic (even though they leant on Old Stuff for significant stretches), delays can easily happen and throw them off their stride a little. I guess the difference this year is most of their output is a) new and b) exciting for the online crowd, so it's getting a lot of positive attention online and in enthusiast communities like this. I've said for a while the year isn't stacked for Nintendo; it's strong, and consistent, and fairly varied (if a little RPG heavy, but that's Switch for you). It'd be interesting to see if Nintendo have anything to compensate for the potential loss of both Advance Wars and 1-2 Switch sequel; the Ukraine conflict and poor focus group testing are two wildcards. Granted, neither game would've been leant on as a big deal (especially not Advance Wars), but having genre and brand variety is pretty key to Nintendo's output on Switch.
Advance Wars, Prime HD, and the 1-2 Switch sequel may yet make it out in 2022. I think you're right to say we get more smaller titles too - I'm surprised Kirby is the only eShop title from Nintendo so far this year; still hoping, probably in vain, that the annual Zelda fix is an eShop only (or NSO bonus?) Four Swords Adventures HD release with local and online multiplayer at a lower price point (i.e. not $60 or £50). I'm also going to (once again) predict Style Savvy, because eventually I will be correct and then I will claim to be a prophet.
Jeff said last month that it was on track for November. Emily also floated the possibility of a November release a while back, but I'm not sure if that was certainty as opposed to a guess.