Destiny 2 has an anti-AFK system where if a player isn’t interacting with the game enough they will be removed from the lobby. Single button/key presses and wiggling your mouse/thumb sticks is not enough, you must be moving about. Also, it is highly recommended you pick up your fish immediately (takes 5 seconds or less) to avoid triggering a GUITAR error (occurs when there are too many objects on the ground). The reason we have to constantly move around is stop people from using macros and other malicious tools to stay in the lobby.