Your opinion doesn't reflect the actual scorecards. At least 2/3 of the judges were competent and open to giving Reyes rounds if he did enough to earn them. If the fight had gone to the scorecards after three rounds, Dominick Reyes' would have won a split decision.
He threw the fight away in those final two, championship rounds. If he had won just ONE of those rounds clearly and solidly, we would be calling him the UFC Light Heavyweight Champion right now, because he would have won a split decision.
But he didn't, and that's a discussion most of you won't be ready to have for a while.