I'm assuming that when BFN players on Bazaar doing the same by A (Square) will get the same?
For the record, the area overlooking A on Grand Bazaar is deemed to be "inbounds" for gameplay since you can access it using nothing but the features on the map. You do not need an MAV to get up there.
There will be places that can only be reached by going out of bounds and then coming back into bounds, these would be deemed to be glitching since you have to leave the map first to gain position.
In addition to that, as has already been stated, using the MAV as a platform to gain access to safe spots on a map are classed as glitching on BFN servers as you have already discovered.
You have got to ask yourself the following question.
If you are SL and you MAV one of your players to the top of a building, then spawn on him on next respawn, then your squad spawns on you after that, you will have four players who can do nothing towards the overall teamplay of the game apart from kill from a safe spot with little to no risk of death themselves. Would you say that leads to the balanced and fair gamestyle that BFN is trying to promote?
If you are truely being honest with yourself, I am sure you will understand (and agree) why we do not allow MAV's to be used for vertical transport of players or for other players to benefit from the actions of members of their squad who are using the MAV to reach places that should not be reached.