This is what I wanted to know as well. But I have a couple of different ways to see this that I can share if you don’t mind hearing voices from more angles.
Personally, I think one of the most important benefits of a plain text system like org-mode (and markdown, etc.) is that it’s human-readable directly, without any help from particular software. So I am not super hyped to make my files leaning towards machine-friendly more than human-friendly on the spectrum in any way. Imaging browsing these files from your phone, depending on the design of the app, your filename might overflow the width of the screen, hiding the most important part of the file name leaving you mostly useless date information.
About the duplication of note titles, IMHO, if you find yourself creating a second note called
emacs, your note should probably go into the same file? Unless I missed some points here. Please let me know if I did. Unless of cause, if you are adopting a file-based style that keeps small notes into separate files. For me, I categories notes into topics, which presents themselves as files. So I have medium to large sized files with notes that are relevant to the topic.
Let me know what you think.