I have hundreds of educational videos on YouTube. Does it make sense to rip the audio and launch it all as a podcast? Why or why not?
Technically you can.
However, I would encourage you to see if you can invest a little bit of time into making the audio work for podcast.
Here is what I mean:
1. Give cues as conversation progresses
2. In a different voice explain concepts
3. Maybe add some music at the beginning, during or at the end.
A very high-quality podcast is Reid Hoffman's Masters of Scale - https://www.entrepreneur.com/article/293393. Check it out.
Most people try to generate a ton of content.
But the internet is full of low-quality content.
You should repurpose your content but still customize it to the platform to make sure you provide quality content to your audience or intended audience.
Hope this helps.