Well, thiis is a bit pedantic on my part, but that's just another word for wanting to keep things accurate. But surely "mediocrity" just means doing something middling well, and that covers most people most of the time.

I don't see that the fact that I might do some things, like playing the guitar, moderately well in any way gets in the way of my admiring people who can play the guitar a lot better than I do. In fact I'd say it helps me appreciate what they are doing a lot more than I would if I didn't play.