The actor who played him as a child - Jon Paul Steuer - is in Sto-Vo-Kor. He is white.
As is Marc Worden, who played him as the young adult who served on Martok's Bird of Prey IKS Rotarran. Accident prone he may be, but he was the ship's good luck charm: as apparently his presence on whatever ship he was on ensured it was never badly damaged in battle, thus the Klingons he served with were able to fight gloriously and bring greater glory & honour to the Empire: and their alliance with the Federation post-Dominion War.
Alexander's father is Worf. The actor who plays him: he owns & flies a F-86 Sabre.
So much for your 'argument', you petaQ!