Earlier quoted context omitted.
Why aren't you responding in Old English then? Surely that would be more correct since it is closer to the origin
Why aren't you busy burning old manuscript and books, since they don't conform to your "new meaning" of words?
Because one of the principles involved here is that language evolves. Old books using old meanings are perfectly fine--in fact, it's to be expected.
It's the purists who believe that original meanings are the only possibly correct ones that need to stick to old English. Or perhaps even old Norse.