Im not sure why Apple would just arbitrarily re-write proven code because there is a new language. This makes no sense. Should a technical/business case arise t

Im not sure why Apple would just arbitrarily re-write proven code because there is a new language. This makes no sense. Should a technical/business case arise to rewrite something, then sure do it in Swift. Is there some subtext here that he is trying to prove that apple doesnt believe in their own language?