Flight attendants admitted that they all talk about the passengers, especially if someone is being rude. They can take notes about you and leave them in a database for any future flight with the same airline. They even revealed that they notice who is attractive on board and play a game by calling people "raftie." This is code for someone they'd want in their raft if they needed to make an emergency water landing.
It might seem strange, but it is inevitable. Maybe you'll be the talk of the cabin crew on your next flight, and hopefully, it's for something good.