Some people have placed their LogSeq DB inside a Obsidian Vault and .. moved on.

While I like using .md files, I can understand the perspective of needing database level syncing.

I haven't kept up with it, not sure why the existing Logseq didn't quietly start using a database internally, and also output .md files too to have both worlds.

Syncing text files can, does and most often will break given enough complexity and multi-device usage, especially with the most basic use case of using a daily note on multiple locations at the same time.