I would see it as making it clear they should be managing expectations.

Moaning about improperly chilled wine on a scheduled airline is (a) a first-world problem (b) represents someone in necessity with a meeting with reality.

By all means moan about improperly chilled wine at a restaurant or a hotel. But sheeh, the reality is it is what it is when it comes to modern scheduled airlines. As I said, BA's marketing department will happily promise you the world, but people need to bear the reality in mind. Perhaps especially on short-haul flights.