It isn't just opposing faction griefing.
1.) Some of us are on PvE realms and CANNOT force these griefers to flag and die.
2.) Some of these griefers are YOUR faction, i.e. horde players killing albatrosses carrying OTHER horde players, and vice versa.
3.) Since you cannot force them to flag and be dealt with via PvP and you cannot force them to stop and the albatrosses are relatively easy to kill, one single player can quite literally effectively STOP every single other player on his/her server from completing certain quests, accessing certain rares, or accessing certain chests, and are thus unable to complete certain achievements.
4.) "Go away and come back later" does not apply in the early days of a new patch, as it is a constant thing. Between lag and honest mistakes, players new to the island who haven't figured out the albatross mechanic yet, and genuine griefers, getting through those crowds and to your chests, rare spawn, or quest is like winning the lottery. I'm sorry, but it just isn't acceptable to be told "deal with it" because I play on a PvE realm and have NO recourse, and it isn't acceptable to be told to wait what could be several days or even a matter of weeks to complete a quest or achievement.
PvP has PvP solutions. Not all of us are on PvP realms, not all of these griefers are flagged, and not all of them will be opposing faction. I can stand in front of them and flag, but if they have a functioning brain, they won't take the bait.
I don't think this should be actionable, but I do think the mechanic needs to be altered slightly. Albatrosses carrying another player should not be attackable, or should at least be considered tagged and continue on their merry way if they are carrying somebody.