"Prime Reyes" just sounds goofy.
However... I do agree that Reyes had a pretty damn impressive rise and looked like a super high level LHW for a short period of time. He had great footwork, very good athleticism, good length with a weirdly proportioned awkward body that was difficult to deal with, great takedown defense, and legit KO power. He was a serious problem for a lot of guys. Unfortunately... he's a bit of a mental headcase and I think he just deteriorated mentally after getting the L vs Jon. The elite mentally strong fighters learn and improve when they have setbacks, but Dom went the other way, and it crushed him. And now his chin has been cracked and his body is likely physically deteriorating too after a lifetime of football and fighting.