A lot of the good blog posts were invested in during the ZIRP era because it was viewed as a differentiated hiring tool. Now that the supply/demand curve has totally shifted, we might see a drought of great new corp blogs for a while.
It's perfectly reasonable for someone not interested in doing this sort of thing to push back--they won't do a good job anyway if they're being pushed to do it. Others get a lot of recognition by writing and speaking. I'm not even sure the hiring pipeline is that big a part of the rationale.