I watched the whole interview, I enjoyed it. I admit I don't really know anything about Musk, he didn't really come off to me as "weird", I just thought he was either eccentric or maybe just parsing his words knowing that it could affect his stocks.
I thought the "pot smoking" could be a dumb choice for Elon considering how volatile the stock market can be, but he's an adult and can do whatever he wants. I have seen many Joe Rogan podcasts and usually find them to be very entertaining, Joe is always talking about weed though. For me it's kinda like a vegetarian - yeah that's super for you but I don't need to hear about it every 3 seconds.