I really don't get what your point is. Are you saying that they are classifying flu deaths as covid. I'm not sure about other trusts but we swab our women against covid 18, influenza a and influenza b. We have had an big increase in the flu vaccine and the measures taken to prevent covid spread have worked for flu as flu is less infectious then covid.
As for dementia there has been a 52.2% increase in excess deaths of people dying of dementia (5,404 excess deaths of people with dementia).
Alzheimer's Society shares a comment on the new ONS figures that show the number of people with dementia who have died due to COVID-19.
www.alzheimers.org.uk