Not like it's anything new for cartoons. Bart Simpson has been voiced by Nancy Cartwright for decades at this point.

Japanese Goku is unsurprisingly voiced by a woman because unlike with Bart who can sound like a tween boy Goku is meant to be in his 20s/30/40s or so depending on which specific Dragonball series you are looking at.

Not that the dubbed version is much better as Sean Schemmel is a cunt but at least he sounds like an man.