For real, great job everyone trying to keep the map clear of multiple notes (and actually looking them up and not just quick sweep) and @kmpoppe for triggering this action traffic (even though duplicate notes according to your stats are sorta stabilized over 22k, but it still made others looking up for old and forgotten notes aswell).
If Organic Maps still works like Maps.me did a couple of years ago, their users have no idea when they are creating notes. I think the new poi form has a text field at the bottom where users write users write a description. Maybe they think it’s required or increase the chances of their edits being “accepted”. That creates a note.
Actually users have no idea about changesets either. The app creates them whenever it’s convenient and never tells the users.
The list and the Wiki have been updated. As per @Graptemys suggestion, the superscript abbreviations are now explained before the list starts.
For ease of use, notes that aren’t currently accessible from osm.org directly (HTTP 500 error) because the creating user was deleted, got their opening comment extracted into a different wiki page, and the list links there.