Can one display blog posts for the listing author on the authors listing page?

This can be accomplished using a third party plugin, such as Display Posts Shortcode.

You’ll need to be running 1.1.23 or later of Directories Pro.

Go into Directories –> [Your Directory] –> Content Types –> Listing –> Manage Displays.

Add a text display element with [display-posts author=”%author_name%”]