Chodosh is an entirely separate Issur. Pashut P’shat is that it is an Issur D’Oraisa, even in Chutz L’Aretz. There are many complicated (and some not-so-complicated) reasons given for the Heter. Even though Pashut P’shat would be that it is Assur Mi’d’oraisa anywhere, Chalilah on anyone to say that the vast majority of Ashkenazi Jews have been violating an Issur D’Oraisa for the past 1000 years.
It is a Machlokes between all the Poskim (except perhaps the Rema) who say Assur, and the Bach who says Muttar. Klal Yisroel Paskined for hundreds of years like the Bach. There is a new movement to be Machmir like the other poskim, but the Halacha Pesuka does not change.