Like nearly every product in this area, these podcasts are scams.
The equivalent of all those LLM-spam "books" you see on Amazon.
They are product pumped out with no regard to quality control, dependent on potential consumers mistakenly thinking there's something like fact checking or editing going on because of the name on the tin.
Worse, this is all "hello world" style LLM programming - give it your cute little prompt ("That's where the real engineering goes!"), throw it a couple links to RAG in, and slap an ad on it. There's nothing here a vaguely competent teenager can't build for themself or the robot can't build for them.
That itself is a nested scam - pretending that any of this crap is difficult, that you need your betters at WaPo to write it for you.
And that's just the tool itself - the next problem is Bezos made it clear that anyone with integrity should hit the road, and those folks did. So all the source material may as well be robot poop already, quality-wise.