The Bond from the novels and the Bond from the movies have always been different. The Bond from the novels was a chain smoking alcoholic, was more violent and even more misogynistic. He also didn’t have all those cool gadgets, which is a defining element of the movie Bond.
So I don’t think we should worry if it is true to the novels but true to the movies. Movie Bond’s ancestry is far less important than his nationality.
Movie Bond is British, a womanizer, into cool gadgets, drives an Aston Martin, is a suave dresser, is an excellent fighter and drinks his martinis shaken, not stirred. Everything else is flexible.