There's an ethical/moral-luck dilemma at the heart of this.
If a AAA-tier podcast on the subject you want to listen to a podcast about exists (and you know about it), then that's probably a better (and obvious) choice for your listening time.
However, if you want to listen to someone discuss or explain something and you don't know about a AAA-tier podcast, it's possible that a generated podcast is better than nothing.
On the other hand, it's also possible that the generated podcast will miss or hallucinate a key detail, and herein lies the dilemma. Is it better to listen to something that might get something wrong, or not to listen and perhaps someday to learn about the subject through some other form that is less likely to include mistakes?