The main problem is depth, but as @freetx says above, there's a niche area of no-nonsense podcasts and explainer videos that are very doable without needing specific insights.

I'm not sure about the podcast format though - why not just do narrated videos? I made the script for the little joke "podcast" above within a minute and the voice rendering took 280 seconds on my 5 year old MacBook M1 with the small 1.5B vibevoice model (once I figured that it works better to batch it by voice, not try to render it all in 1 shot). Alibaba has released a novel pictures + script to video model that would enable anyone with a 24GB GeForce card to just roll out explainer vids.