Youre talking bollocks mate. Hes a very decent Championship player in his own right. Hes scored 80+ goals in the Championship (or above) from attacking midfield / wing. Regardless of who his father is / was that is not to be sniffed at.
He scored 18 in the Championship the one season, when he was 20 years old, that would have got him attention and limelight regardless of who his father was.