No, they'll say, "Damn, that sucks. But he sure does have balls of steel for moving up in weight and taking this fight in the first place."
No one else has the balls to do what he's doing. If he loses, then it's not like he sucks. Idiots like you would say he sucks for moving up in weight and losing to a dominant champion. If he loses this fight he'll just move back to 145 and continue to dominate the weight class like an above average champion. Go ahead and "roast" me if he loses. You won't have much to say. Give the guy credit for taking the fight. A fight NO ONE else would take in his shoes.