helmacd Assisted suicide and mercy killing of the terminally ill (who are not, of course invariably old) or the demented (also not invariably old) is not the same thing as acceptable killing of old people.
Returning to the original post and the article in question, there is logic to the idea that a newborn in a situation that would have been acceptable, legal grounds for abortion when a foetus should be allowed to die or even killed. However, logic is not the sole criterion for ethical decisions and the idea of deliberately killing a newborn baby, however disabled, is, I suspect, unpalatable to most people. Allowing a severely disabled baby to die by giving only palliative care is more acceptable to some. No one is suggesting that this should be policy, merely discussing the complex moral issues concerning such matters.