But you can, if you add Scrivener to your workflow. Just sync AT3 metadata to Scrivener, then use Scrivener to compile the metadata into markdown files. You can even write the metadata to YAML if you want.
In disclosure, I’ve only confirmed this with the Scrivener folks, but haven’t done this step because I came up with another approach that I’ve already written about: AT3, Scrivener, and Obsidian - Q & A - Aeon Timeline