And that's why there's room for multiple podcasts on the same game
It's true that a good quality blog can deliver strategy content faster than a podcast. It's pretty hard to find a good strategy blog though, a lot of people feel it's easier to talk off the top of their heads than to have to edit and organize their thoughts into a more structured format.
In fact, I'd often prefer a good blog article when I can find them.
The other factor is how you consume it. Podcasts take more time, but all time is not equal. I can listen to a podcast while I'm driving, or walking, etc... Not so much a blog. Yeah, I'm sure there's some text-to-speech thing so I can *technically* do it, but it's not convenient. 20 minutes of podcast on the way home from dropping the kid off at school in the morning is pretty effortless and makes good use out of otherwise unproductive time for me.