I'll be honest, aside from the FnLock LED issue, most of the issues I've mentioned were probably fixed by 2020. I got this laptop in january 2019, and none of the stable distros (ubuntus and such) would even boot without kernel parameters back then. 5.1 became the golden kernel version for me for a while, where everything worked as later kernels would break suspend/hibernate a few times before stabilizing properly. It was a rocky few years but by kernel 5.10 (december 2020) everything worked fine, probably earlier like you've mentioned.
Graphics always worked fine except for random full system lock-ups/kernel panics in amdgpu which have been fixed at some point I don't remember when. I have no idea what caused them but a kernel option (something with iommu) made them go away until it was properly fixed, and I think that wasn't exclusive to this laptop. Graphics are still scrambled when waking from sleep though, but they take a split second to restore. The rest of the problems (bluetooth, fingerprint), still persist.
Graphics always worked fine except for random full system lock-ups/kernel panics in amdgpu which have been fixed at some point I don't remember when. I have no idea what caused them but a kernel option (something with iommu) made them go away until it was properly fixed, and I think that wasn't exclusive to this laptop. Graphics are still scrambled when waking from sleep though, but they take a split second to restore. The rest of the problems (bluetooth, fingerprint), still persist.