There's an issue in the Linux gaming community regarding VRR and HDR, we can only have 422 HDR and it some people have bypassed that limitation with DisplayPort to HDMI cables, but cannot get VRR out of them with HDR, so we're stuck with 422 HDR with VRR out 444 HDR without it, it seems like converting DisplayPort to HDMI is very conflicting and not even the best cable developers can make it work without some compromise. My assumption is that Nintendo had to choose between those two and opted for the one what had more noticeable impact, maybe they'll fix it or maybe they won't, who knows...