Apparently the answer is yes, at least for Microsoft.
https://www.eurogamer.net/articles/digitalfoundry-2018-freesync-support-tested-on-xbox-one-x
It wasn’t actually a selling point for me with this TV. It was the combination of being highly rated for both gaming and sports watching as well as the in store visual upgrade that was obvious when compared to the prior gen tech. If you look at an NU8000 next to the Q70 and up (and really…even the Q60…) then it’s clear that this is the best an LED TV has looked and it’s a significant jump. Lots of TVs say they have HDR, but their ability to display things bright enough to make it worthwhile is often suspect.
I’m still not sold on OLED both for price reasons but also for burn-in, which is apparently a problem. I want to wait to see what happens there so maybe in another six years (that’s how long since I got my 50" Vizio) I’ll be buying OLED.
All that said, I’m happy that it’s there. I don’t have AMD videocards for my PCs so I’m not going to benefit there, but I have a GSYNC monitor for my PC so that’s ok.
Also, I think it will be commonly supported in the next generation of consoles next fall.