Unfortunately dynamic metadata is not efficient for package resolution, so we don't want to encourage it. Instead, we want to design a better workflow for using source control for versioning, but haven't had the time to do so.

Interesting, a better way of doing versioning would be nice. The tool I use requires a git repo setup with at least 1 commit, annoying for brand new projects. I'll be eagerly waiting to see it eventually.

At what point is that the case? When a package is built, it's version is determined at that moment from whatever dynamic source, and is then written into the metadata in a static way (or surely could be if for some weird reason it isn't).