@vga256 You forget that there are those of us who were <1990 and understood the concept of organization, but also used floppy disks where you'd list the entire directory to find something. Convention was to name an empty file at the beginning with a space or ~ or something to show up first, then a name or description in the title for the disk contents.
Myself I prefer the flat version with the ability to quote/link replies as complex discussion can get out of control with a tree. I grew up with BBSes, never liked Usenet's raw structure, and thrived on the traditional forum looks such as phpBB. I got used to Reddit's style of trees and ranking movement, but very long threads got annoying to follow.