One has to be careful about assessing things on a 'seems' basis.
DLH's WBO belt did not do anything to elevate his actual prowess as a fighter. If Oscar beat 34 'champs' that means only something if we look at who those guys are, how good they were when they faced Oscar.
Take Oscar. Imagine a world where there are no belts. Take the belts away and he is the same fighter he was all along.
If he fights the same men and there are no titles, he is the same fighter. If he fights a guy and wins a strap that just happens to be at stake, winnign it doesn't make him better than if he won a salad or half a cow or whatever.
THAT's the point.
Hell, I don't even have disdain for Roy. He was awesome and if he was the world's worst jerkasaurus he'd still have been awesome.