The problem is ChatGPT doesn’t understand podcast popularity nor the journey heavy listeners tend to go on. To end up with a list like OP’s, you typically have

The problem is ChatGPT doesn’t understand podcast popularity nor the journey heavy listeners tend to go on. To end up with a list like OP’s, you typically have heard of popular podcasts, tried them and stopped listening, either unsubscribing or not adding them in a new podcast app. To ChatGPT the OPML just looks like you overlooked some similar material and it happily fills in the gaps. Integrating with a listener stats data source and capping the max popularity of the recommendations to the minimum popularity in the OPML shows would make it way better.