Tri-Star Sim
If you invite an individual onto your flight deck, good behavior means being polite to your guest and not mocking their flying practices. Professional behavior requires the crew to focus on the task at hand and not to indulge in chatter extraneous to the safety of the flight in one of the world’s busiest terminal areas.
Of course, being as concerned with behavior as you are, I am sure that you would not be so rude to your guests and that instead, you would choose to concentrate on the task of maneuvering your aircraft safely rather than discussing tomorrow’s tennis game.
Reserve your lecture on behavior for the flight crew in question