It'd be hard to detect from structure. Episode descriptions can and do legitimately have links. And if/when it comes to deep inspection, instead of a dummy audio file one could use a TTS-ed audio version of the post, there's some legitimacy there. You can even flip it around and claim that the blogpost is the "audio transcription" "for those who want it".

But yeah let's not underestimate the power we're giving these platforms. If down the road it doesn't match the monetization strategy? Platform giveth, platform taketh.