I'd like to add a little something to this. Whatever happened to the days when podcasts were completely commercial free, mostly created by amateurs and didn't have a set length or schedule. They were distributed through RSS feeds, so when you got it it was a surprise.
Nowadays, most podcasts are not what I would call podcasts. I would simply call them radio shows without the radio. In some cases they have video too so they're really just TV shows over the Internet
I miss the '90s