Not really? I'd wonder why an American War veteran was japanese but I wouldn't get angry.
And that's different, Goku is from a made up planet, on another made up earth, where there isn't even an Asia. How can an alien be asian when there isn't even an Asia in this fictional Earth?
that what the white media thinks, making that movie, messing kids dreams. just because they looked white skinned in dragonball doesn't mean they are white. some japanese people are very light skinned.
1) There is already a thread in Other Entertainment for this.
2) Goku was never and never will be Asian, he is an alien ffs.
3) You clearly know nothing about Dragonball if you are asking why Vegeta wasn't in it. The fact it's an adaptation of the original Dragonball should hint that it is set far before the sayajin saga.