All sorts of doctors say all sorts of things about all sorts of diseases.
People read these in newspapers and produce like magic links to webs sites that support their thoughts.
By and large, main stream doctors do not support these hypothesis and bear little or no evidence of truth.
I have never seen that description of the end result of CPOD or indeed any lung disease in a lifetime of medical involvement.
Yorkshire lass, please be assured that the medical profession is alert to such problems and death, when it comes, as it will to us all, will be managed by decorum and respect, with particular emphasis on the relief of symptoms.