I dont think an AFF post is posting it publicly despite the following that AFF gets. We all have anonymous usernames.
Ive seen people carry 3. 4 if you include all the extra clothes they have on.....
Ive carried more than that but have always limited carryon to 2 pieces. But its not possible to post on AFF, check emails, send messages, search flight alternatives in case of IIROPS, check flightaware24, check seat /upgrade availability, while eating salt and pepper squid + drinking a bev, while trying to mind 4 carryons.