My instinct on this is driven by having been in bad and good relationships, and reflecting on myself in those situations. It ain't much, but it's what I've got to work with. Yes, some people are unmatchable, or shouldn't be matched. But somewhere between "is in high demand and has good judgement, can easily find great matches" and "is unmatchable and should be kept away from others", there's a lot of people that can be matched better. Or that's the hypothesis.
Seems reasonable, although I'd still wonder just how much difference improving the match would make even for the majority of middle-ground people. It sounded in the grandparent post (first and fourth paragraphs particularly) that you were treating the notion that it would be "a lot" as a premise rather than a hypothesis.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.