I don't listen to them nearly as much as I used to, mostly because podcasts are so ad-laden these days. Listening to a two-minute ad for Ziprecruiter for every 7 minutes of content gets old fast.
I think the difference is mostly between shows made by companies, or by individuals and non-profits. Gotta pay those investors.
Basically, the same situation as with videos and websites.
Both Joe Rogan (individual) and NPR (nonprofit) are ad-laden as...
As for Joe Rogan, I can't say I've heard his show. I was relating merely my personal experience.