Well, see ya next year, new SoC rumors!
While I would've bought in to a half-step upgrade, I'm glad to see that Nintendo has opted not to repeat the mistakes it made with the New 3DS line of systems where few were happy with the upgraded processing power (the few being the newcomers who could enjoy the steadier performance in games such as Monster Hunter Generations).
This does have me question as to the timing of the Switch's successor. A 2023 release would put it in line with the gap between the Wii and the Wii U. By 2023, the old, circa 2015 Nvidia Tegra System-on-a-Chip in the Switch would be 8 years old technology
https://en.wikipedia.org/wiki/Tegra#Tegra_X1. This is a gut feeling that makes no sense, but I'm thinking maybe Nintendo would rather avoid Metroid Prime 4 being a split-gen title as a matter of pride (of it being promised Switch-only/first title). Not that Nintendo ever showed that much reverence for the Metroid series for it to put the next generation of Nintendo hardware on hold, but maybe?
Then there's the chance that maybe Nintendo would want to coast on the Switch's success through 2023 and not release a successor to 2024. The money-making would probably make sense to Nintendo, but this notion has me nervous given the performance issues/quibbles in games such as Bowser's Fury and the Monster Hunter Stories 2 demo.