Not sure how people this disconnected with the rest of the world are able to create an "open podcast directory".
Pretty much seams like there is a platform wars going on when it comes to podcast. Looking what youtube did to video content as a platform I think companies like Spotify (Gimlit) smell blood when it comes to podcasting. Think that would be a shame for that industry, podcasting collectives like Radiotopia are awesome because of that, they have to lean on quality and content. Not on some fancy algorithm that tries to keep you engaged as long as possible. Looking at the content he creates, seems like the complete opposite.
What made podcasts awesome was that the platform was fairly neutral (rss feed). Yes you have Apple podcasts, but I don't know anyone that really likes podcasts and still uses that app.