Maybe the portable could rely on cloud offloading to calculate more complex physics, then stream the output to the device? It's technically feasible; meanwhile I think a good game could have scalable physics models depending on the processing capability of the device.
Basically I'm saying, the portable doesn't have to be such a baseline it prevents complex physics in future 1P titles for the PS6.
So they shouldn't experiment? This is why devs rarely try switching things up: they do, people get mad. They do more of the same, people still get mad. There's little room for a win there.
I'd be confident saying there's a lot to the game in terms of advanced platforming which you're probably looking for, it's just that such as a focus in a showcase probably isn't deemed worth putting front & center. People "basically" know what 3D platforming is going to look like, but how many were expecting full environmental destruction in a Nintendo platformer?
So yeah, I can see why they're focusing on that aspect for now, but that doesn't make me doubt the more traditional platforming segments too (hopefully also cleverly using the destruction aspects). I do agree tho, it does kind of feel like a spiritual successor to Wario World, so having Wario in it wouldn't have been too much a stretch xD.