I'm not 100% sure tilt is supported out of the box, and amibo for sure is not unless you have a dongle or something.

But I'm not sure why this is so surprising, the steam deck is a Linux PC.

I can confirm a PS4 controller tilt sensor works with yuzu, so fundamentally it's possible, not sure a plugin for parsing the steamdeck tilt sensor exists though

Amiibos are supported (virtually), not sure about the rest