That is cuz he is also part German shepherd, he got the full GSD coloration going on but trust me if you saw him IRL you'd react just like I did when I first saw him.
That is not a dog.
the ears are another telltale sign notice how they have a concave profile.
I've just never seen a wolfdog where the dog colouring is so prominent, that's all, usually they have a more wolf-like coat (though I think all the wolf dogs I've seen have been huskies and malamutes, which have a somewhat similar coat colour already)