Well this comment down below brings it about really quickly:
"Switch 2 has better FPS for Switch 1 games. Like BotW stops having terrible FPS drops in certain scenarios."
If you need a newer-gen piece of hardware to run an older-gen FIRST PARTY title at acceptable speeds without issues then I'm going to say you are ABSOLUTELY and PURPOSEFULLY selling underpowered hardware (and Nintendo has been doing it since the days of the NES. So many first-party titles with slowdowns because the hardware was not up to the task.)