I think it's a trait in the community. I remember the days sitting in an IRC channel listening to some bootleg live podcast/radio show broastcast over Icecast. It was sorta like pirate radio for a bit. Then podcasts started to show up more and more (in big part due to the iPod) and having a big publishing network wasn't really a thing. Sure, people could use iTunes, but a ton of us were just dropping MP3's from someone's site onto whatever MP3 player we had at the time.