It’s a perfectly useful word. It’s more usually applied to things which should be buried, but, for whatever reason, haven’t been. The two examples given in the definition being turds and dead people, which I think we all agree shouldn’t be left sitting in the middle of human habitation for very long.
I’m definitely putting this podcast on my list, anyhow. I’m sure I’ll get to it sometime after the small stack of Batman comics I’ve never gotten around to reading.