KP donation is part of the game, I often help others with KP on their wonders, there are returns to be made, so it can be a win win situation.
Player A just fills their own wonder, should those KP chests just go to waste?
Player B has others in the fellowship just add 1 or 2 kp to get massive rewards, why should I not be allowed to make a significant contribution for example 50kp to get 60kp in instants and a rune.
Player C has a new wonder I need runes for, why can I not then add to that to get the needed runes to unlock my wonder?
Your suggestion doesn't really have anything to do with push accounts, if you suspect one, just inform support and they can check it out.