Ok lets say we have 3 people. Person A, B and C. They are all friends. Person B and C played a game together. Person A wants the replay of said game.
If person A has to ask permission does the request go to B, C, or both? If it just goes to one of them, say person B, then what stops person A from going to person C and getting the replay from them? What if I request the video from both of them because I don't know who will be on again first, if they both accept then do I get 2 notifications? Does the second person get a notification that the game was already shared?
If neither B nor C choose to share the game with person A then what is to stop person A from going behind their backs and sending person D, who was also in the game, a friend request request purely to try and get the replay from them?
Overall it can cause a lot of conflict and raises the issue of telling people that they can choose to not share games, but not actually letting them lock away that video because any one of the other 9 people can still freely share it.
That is why I am against giving people the option, because it could lead to bad habits and pointless friend requests while also giving imaginary power. Instead people should be able to download replay's of the games on anyone's account with or without permission, since they could have spectated them anyways.
Pretending to give people a decision is pretty silly when the decision has to be agreed upon by all 10 people, and there are 3rd party programs that will automatically record people's games for them anyways, which just breaks a permission system even further.