Does mediocrity have any merit?

So I was watching my kpop stuff, and I thought to myself, these celebrities before we saw them as they are, were or are very average in real life. I associate the particular notion to a good majority of them, because obviously as usual there are exceptions. But anyways getting back to the topic, their skills are often at average, but it is their drive and commitment to the art that makes them what they are right now. I like many of them not just because they can reach an octave or note better than someone else, but for the fact that they bring that "something" different to the table. I for one, am a big sucker and supporter of the underdog. But to see this transformation is just so pleasing to me on many levels. Someone took a good look at someone, and tapped into his/her potential, and provided them with the right tools to harness their talent. I mean how often does this happen? If people did this more often, can imagine how better things would be in life, societies would reach new heights, tolerance and talent will grow substantially, it would be a step to something better and positive. Dont you think?

P.S: I am not saying one shouldn't aim high in life or reach for the sky, but just that even if you were to fall short, you still have a chance at that something, which needs you in your mediocrity. Or like the Kari Breed titles her book " coming to terms with mediocrity" is just what we need to do.