The reality is that we're probably doing both. We're undercounting Covid-19 deaths due to the headline figures in the UK mostly only counting deaths that occur

The reality is that we're probably doing both. We're undercounting Covid-19 deaths due to the headline figures in the UK mostly only counting deaths that occur in hospitals, and also overcounting because not all of those deaths are caused by Covid-19: https://www.bbc.co.uk/news/health-51979654 https://www.bbc.co.uk/news/health-51979654 Also, this is a terrible, clickbaity headline. When they say that the care home deaths are "far higher" than official figures, they mean that they're far higher than the figures for the number of deaths two weeks ago. For something that's growing exponentially. As the analysis at the bottom points out, "the hospital figures show deaths have been increasing at a similar rate", so this is sad but not exactly surprising. (It might not be exactly the same rate of growth as hospital deaths, but the numbers given in the article are only very approximate.)