Yes, the posts do sound sneery but then there is often some in joke going on or a certain group that always back each other up whatever the subject, maybe they are all one person.
No-one's backing anyone up! As has been explained, several times on here, a while back there were regular threads as the school holidays began, about a so-called 'gran' buying DGC's plimsolls and ugg boots in Shoe Zone. The clue is in the underlined bit. Lots of us grans used to join in and have a bit of fun with the poster(s), but it didn't seem to put them off. Every school holiday they'd be back. And it was always Shoe Zone.
No one on here is sneering!!! It's a joke!!! <off to find a good strong brick wall>