Maybe I'm not the target audience, but I'm rarely if ever interested in the speaker of whatever information I'm trying to consume, and podcasts' focus on guests (and hosts) always came off as self-aggrandizing and people speaking just to hear themselves speak. Especially with very little editing (uhs, pauses, and general dysfluency) and/or preparation (winding conversations with a lot of fluff instead of a structured outline), I'd almost always just prefer to listen to a narrated book or textbook on whatever topic I'm interested in.