I guess what some of the other comments are aiming at, is there a categorical difference in whether you watch something because “people crave for meaning” and “people crave for rewarding experiences”. The latter is the lever exploited by facebook’s, instagram’s or candycrush’s design. Is there a difference when people go hunting for a philosophy of life? The search for a personal guru? I’m not sure. If what makes you come back again and again is the dopamine high you get as part of the experience of finding an inspirational talk, maybe that’s not a search for meaning. If the reason you are coming back is a different kind of reward, maybe it’s more likely to be motivated by a search for meaning.