the whole thing with Nintendo backwards compat is interesting, like it sucks that there's no guarantee of 100% perfect compatibility but i defo think they were constrained, and their history (maybe not recently with NSO but in the Wii-Wii U era) of specially crafting emulators to work with their games and doing testing will definitely ensure that the experience is good without needing hardware. Which is really really cool.
they weren't gonna do what they did on the DS and include real Switch 1 hardware on the Switch 2, that would make it unreasonably expensive and not to mention a lot more complicated to make, because you're effectively putting 2 SoCs on a single board lmao.