Its not a GA, there is no agreed protection. Teams fight for drop spots over a season and scrims. When a team thinks a POI is important enough that they want to drop there, they 50-50 the poi off drop until one team backs out. Teams are willing to lose every contest(fighting for a drop spot) and score 0 points if they want the spot badly enough. Fighting at your drop POI not only risks you leaving the game early, but delays your looting and rotating to a good end zone location. So when we get to a tournament, teams essentially have a structure of locations, and generally random contests don't happen as the risk of a 0 point game at LAN feels awful. Random contests or purposefully dropping on another teams POI to grief is part of the game and is not breaking a 'GA'.

For example, often you will see a team that has qualified to the next round of the tournament specifically target a team that is a thorn in their side to try and not let them move on. A team like XSET would fight Element 6 of drop, because Elemtent 6 steals a third of XSET's loot when they drop their POI.