MB’s point is exactly the journey aTbRef went on. All the content you see online, bar things like RSS feeds, sitemap, etc., are descended from a single root level container. Only the index (home) page of content is at root level.
For simple testing, e.g. of users’ problems here, I use the root map/outline. But, for actual projects, especially where export is intended I use a root container for the primary export.
Whether using HTML or some similar mark-up (OPML, XML, etc.) it is important to understand that a note exports to the folder relevant to it’s outline location. Although, by using codes like
^include()^, you can export data from one note via a different note, the latter still exports in its hierarchical place.
I think the app’s design echoes, understandably, the non-corporate web from before database-based blogging took off (i.e. when the app was originally designed). To move to a different export paradigm would essentially be a design do-over and so I believe a large engineering cost for a powerful feature set that not everyone uses.