This is the blog post I really wished existed before I held my breath and bought a laptop with no information on whether it would work well with Linux, let alone Fedora.
TL;DR It’s working fine so far, even the webcam, despite having a Raptor Lake CPU that could have been delivered with a MIPI IPU6 camera without upstream support. And I think this means that the T14 gen4 will also work fine, because I think they share a motherboard.