@XingMing That article is pretty unremarkable. It basically says that because we are not testing outside of hospitals we have no idea of the infection rate or mortality rate in the UK and so are relying on China's mortality rate to guess number of infected. That is true. We may have a lower mortality rate. But we may not. Our mortallity rate may be higher. Without testing no one knows.
Also some people will die of this virus who would have died soon anyway. No one has denied that. Someone who is in the terminal illness NHS pathway could die of a cold. I know from my own relatives who have been on this pathway that saying what actually killed them is not always easy. With someone very elderly and close to death they can have multiple health problems. Some cancer, heart failure, lung failure, and the catch flu. What actually ends up killing them is often hard to say and in a way does not matter.
But we know from the people who have featured in the media that very many people do not meet this picture. Yes they may have illnesses that make their immune system weaker like diabetes, but they are not about to die any time soon.