I just think that there's too much focus on people with beneficial neurological makeup ("innate talent" and "genius"), when neither are a requisite. So long as the best case scenario talent continues to be the focus, it suppresses the interest and learning of others that feel lacking in special ability.
As to Mozart, he wrote a lot, sure. Plenty of people are prolific creators. Not always is their output recognized as valuable. Mozart was an uncommon person for reasons beyond skill with musical composition. If any number of situational variables had been different, he might be unknown. If he was born today with modern technology, would he be recognized? If today's successful "genius" was born in Mozart's time, would they still succeed?
And was he really as wild as dramatized biographical stories suggest?