Pete needs his own TV show for about 8 years until he becomes so popular with his great voice and personality that he will just win almost automatically by that time despite his demographic drawback.
I recently read The Last Campaign about when Harry Truman ran and won in 1948 and the author made the point that this was the last time when TV advertising was not a deciding factor, but beyond that a candidate henceforth would need an established media presence in the public's mind.
Here is where Biden is showing a huge weakness when he should have spent his WH time becoming visible instead of just riding the train. Did he even write a book? Buttigieg can't win right now but he could someday.