We bin people like that because, before the bins, we just assumed there was one and that people who weren't in it were bad. Now we know there are two, and people might simply be in a different "good" rather than out in the "bad".
I think, (and I'm being presumptuous here), everyone knows there are no true 'bins', and that people are complicated, and every characteristic is from in a continuous metric, and there is no good or bad.
I also think that this is why bins are used. It's not an attempt at correctly describing people, but rather a simplification, using general terms in order to communicate the traits in a, best-effort, meaningful way.
I could never adequately describe how I _truly_ am as a person. All I can do is draw on gross simplifications that you yourself can translate to a meaningful metric based on your own experience.