I am surely not part of generation podcast. Too old, too cranky — but mostly because I am a reader. And throw audiobooks in there. Now, I acknowledge that for some, say people who have problems reading, listening is a good alternative. But some arguments for podcasts are that you can do it while you do something else, for example, commuting. Which means that you are not paying attention to one thing or the other: you become a traffic hazard or you don’t really hear the words. And you are not there, not in the moment. Reading is a solitary experience, you can take a break and wonder, you can go back and read a paragraph or a page again, you can skip a boring paragraph. With a podcast you are at the mercy of the narrator, the speed, the intonations, the always-moving-forward. There is someone else there with you, which may be what you want, but it is, at least, a very different experience from reading.
Podcasts are convenient: and not only for the consumer but also for the producer. Writing is hard and involves much agony and revision. Podcasts are probably less so, although I do realize there is a script somewhere. But you can gloss over so much when reading it out loud.