Maybe I didn't explain myself well in the second point that I answered.
We threw the fortress in third place, then destroyed the fortress several times as our wing grew.
Some of us (the greatest) went to our friendly alliances (not only wings) to help them in the attack on the fortress and thus reward their help so that we could obtain the third position medal.
If these few who went to help lose the previous medal and give us a fourth (fifth, sixth…) position medal, it is promoting that the wing not be helped. Or in other words, it is being promoted that there are no wings or allies because afterwards you will not be able to return the favor without leaving us harmed.
Added: I see it as if you were saying "You help me destroy the fortress but then I won't help you when your turn comes"
