AoD is not a new alliance. Nor is Diamonds a new player.
He rebuilt AoD using the same philosophy that it operated under in the past: strength through numbers and force.
Since AoD came back, there have been several instances where people have complained about double hostiles and gbs and the like. You repeating yourself about how it's all rainbows and butterflies isn't going to change the fact that Diamonds has a reputation, AoD has baggage, your recruitment practices lend themselves to acquiring 'bad eggs' (though thats exactly what Diamonds wants), and that there is a slew of kingdoms with bad experiences with AoD over the last couple of ages.
AoD will die, don't you worry your empty little noggin.