Best-practice: Single items in folders?

[m-mohr]

The best practices state:

Items should be stored in subdirectories of their parent Catalog or Collection. This means that each Item and its assets are contained in a unique subdirectory.

When you store your assets remotely, this is weird because it leads to a structure where you have one item per folder. Should we say that this only applies if there are additional files available for that Item (e.g. assets, preview, sidecar, ...)?

If not, the stac-spec examples don't follow the best practices and should be changed.