The author wrote a plugin for Obsidian to integrate the Kirby CMS. So they can write in Obsidian and run deployments, exports directly in Obsidian.
They also have templates for dedicated categories.

That's maybe something I would consider for my own blog, because:

• I already write in Obsidian
• Astro can build easily markdown files

A simple Obsidian plugin can do the job well.