@jaredwhite I would also add - the use of "tech journalist" doesn't help your argument. People talking about the content in podcasts - whether they're open RSS enclosures or things like Joe Rogan - aren't tech journalists. They're media journalists.
I come from radio. A lot of radio (but by no means the majority) is now listened-to online, rather than radio waves. Doesn't stop it from being "radio", though.
@jamescridland The ecosystem of podcasting, like the ecosystem of the blogosphere before it, like the ecosystem of the web itself, has a certain inherent set of characteristics. One of them is that you can subscribe to a podcast in any player which supports podcasts. I consider that an inviolate feature of this medium.
If I can't subscribe to your podcast in my player of choice, it's not a podcast.