I think the joke is kind of like the talking muffin joke. One bird sees a leaf changing color and apparently has a pattern recognizing brain enough to identify that summer is ending and remembering from last year that that means they’ll have to fly south.
The other bird is a bird and it’s a miracle he recognized that the leaf changed color from day to day. He probably doesn’t even remember what migration is, it’s all instinct.
Gaming is often hard to distinguish from cult behavior.