The other thing is that we often engage with things for two goals: (1) information and (2) entertainment. Text excels at being extremely efficient for (1), but

The other thing is that we often engage with things for two goals: (1) information and (2) entertainment. Text excels at being extremely efficient for (1), but not as efficient for (2) - at least when compared to multimedia like photos, videos, audio, etc. Podcasts offer a good balance between (1) and (2), but they are not the high-octane fuel of information that pure text can offer.