That's fair. I recall reading the developers' rationale for their decision to do multiple documents and sharing at the document level. They argued that it simplified the mental model, and I'd tend to agree: when I use shared docs I want to be careful with what's private and what's shared, and the UI (the document list on the left) make it easy to do that. Almost every time I've shared something, it's been intended for sharing from the start, so creating a new document is natural. (And the one time that wasn't true, cut and paste into a new doc was just a few clicks.)

One problem with Workflowy for me was that the mobile app(s) were not very good. Dynalist's isn't great either but it's better.

Anyway, the products are more similar than they are different.