Never played Skyrim on Switch but I always hear Persona 5 Royal as the game that highlights how far behind the Switch is. I don't remember the details but apparently some stuff had to be cut and it doesn't run as well? I'm basing this off of very vague memories of hearsay so, grain of salt.
I don't expect the next Nintendo console to be on par with something like the PS5 in terms of hardware, I don't often find myself stressing about that sort of thing. Nintendo's strength for me has always been the first party games themselves, and the portability of their handheld systems. I imagine a lot of corners were cut trying to make the Switch a completely portable device. I think the Switch has always been outdated, Nintendo's been outdated for so long, and that's just a thing I've grown to accept. I think trying to focus on hardware strength for a Nintendo console is a losing race, because it seems like the competition has been focusing so hard on making the strongest most powerful console for so long.
If there are multi-platform games I want the smoothest experience on, I'm likely buying them on PC since that's just how I prefer to play a lot of my games.