The game is way better now
There is almost no solution for this, removing this system when both players are in the same alliance will not fix anything because biggest alts abuser use it inside the same alliance.
Activate it only for 2/4 weeks will not fix the problem where players can't help each other during the beginning of the server and I know that this will not stop alliances from using alts after that delay.
Only solution (that other browser games use) : two accounts can play with the same IP adress but these two accounts can't help each other, and account sharing is forbidden.
But they said that they can't do it.
But yes, it's sad to see that after few years, this patch was needed due to the increase of alts abuser...