The point is... if you write a non-PC song now you might get slated for it. However, singing a song from a period in history even if it is glorifying fox-hunting or whaling or whatever, is reflecting a past culture. F'rinstance, one of my favourite authors is Dorothy L. Sayers - but her comments about 'niggers' and'jewboys' etc. would go down like a brick budgie today. Quite right too. At the time she was writing, they were the norm. If we're going to look at any history at all, it's got to be the lot, including bits that people may not like.