I'd recommend the second Harris podcast instead. They got bogged down on a side point in the first one as they mention. https://www.samharris.org/podcast/item/meaning-and-chaos
I would actually recommend Peterson's material before the Sam Harris podcasts. I can see many people that are arguing against his view just by listening to this podcast and it is obvious to me that they have not understood the actual thesis. I can see the votes going up on CronoDAS' "factually correct" comment above which is one of the things that Peterson successfully addresses right from the get go...
Lately I have been investigating the work of Jordan Peterson which I have found to be of great value. Indeed, I have to admit that I am being persuaded but trying to keep a critical mind and balance between doubt and belief.
I thought this is a strong argument for a more sophisticated understanding of the function of religion that would be quite fun to throw to the LessWrong community for an attempt to dismantle ;)
You can find his lectures online on YouTube. The 'Maps of Meaning' series is a fairly detailed exposition of the concepts. For a quick taste you can watch the Joe Rogan podcast with him (they talk a bit of religion in the last hour or so) though in this kind of format you inevitably only get a sketch.
Have fun!