That's not necessarily a negative. Rogan is wide not deep. The eclectic guest selection means listeners are exposed to a wide range of ideas. Well, at least as wide as the guests Rogan can book, and the topics and people that interest him personally.
The show is successful because it knows that Google exists - it knows there's a universe of information outside the bounds of the show. It provides the gestalt and it's up to the listener to explore the details.