I don't know why you're talking about "the ins and outs of audio recording". The author makes clear that's not what he's talking about. In the very next sentence after your quote he writes:

>Forget the lousy microphones and the dinky interstitial stock music — the thing that derails most podcasts is the blab.

And later on he explains again.

>By “sound good,” I meant that I wanted podcasts to sound considered.

Anyway, I think this is just a matter of taste. I imagine the author also hates talk radio/sports radio. You know those 2-hour shows about the Philadelphia sports or whatever?

Much of podcasting is essentially the modern take on that. Of course, it isn't "considered". Of course it has "blab". That's kind of the whole point -- it is filling in a connection/emotional gap that people aren't getting in their day to day lives.