I was curious if having a PS5 now would make Switch look terrible to me, but honestly, so far no; I'm able to play Hogwarts Legacy and Diablo 4 on PS5 alongside Trine 5 and FIST: Forged In Shadow Torch on Switch without the latter's graphics bothering me.
I guess my brain just compartmentalizes them a bit, like I know when I fire up a Switch that I'm playing on a nearly 7 year old mobile device so my brain has appropriate expectations.