I've seen it a few times, now. YouTube channels, Twitter accounts, Instagram handles... multiple instances of where someone starts out and brands themselves as 'Mediocre' Something Something. What happens? They inevitably improve, or they were already reasonably good to begin with, certainly above the median skill level or presentation. So they've saddled themselves with the baggage of a goofy, self-deprecating joke that ages like curdled piss. C'mon. You're going out there, putting yourself into the world - the whole fucking world, you're online! Put your shoulders back, square your chin. Don't be mediocre.