The thing I find with discussion on here is that although most threads have way fewer comments and especially top level comments, I’m way more likely to get a response and end up in some kind of discussion than on Reddit where most of the time you just get lost in a sea of comments. Also think comments tend to be more conversational, less memey, less aggressive etc, just generally nicer.
Until I saw the sub I thought this was going to be a question about what to call the postal officer now that we live in a modern society where women are trusted to stuff letterboxes as well as men. Postie is of course the answer to that.