Granted, they don't really qualify as a 'podcast', but if you need an introduction for someone who is still asking "why should I even care about bitcoin", for my money, nothing beats about a half-dozen or so old Andreas Antonopoulos videos.

Here's one that I just rewatched from 9 years ago that is still pure gold (pun intended):
https://www.youtube.com/watch?v=l1si5ZWLgy0