Rosberg didn't have an overlap, he was behind. Just having your front wing endplate nudging the rear tyre of the car in front is not sufficient to call it an overlap.The standard in F1 has always been that if a driver has his wheels alongside the driver in front's rear wheels, then they should give them space. (I.e. An overlap)
When pretty much all the commentators and even Rosberg's own bosses agree that it was a clumsy move that he should have pulled out of, why are some so determined to find fault with the victim?