In the UK, 89.5% of people who have died of Covid 19* are >65 years
96.2% are >55 years
99% are >45 years
* died of any cause, but within 28 days of a positive test
I don't know about people with long term conditions caused by Covid, but Covid is hastening the end for old people, especially those with co-morbidities. Since expected deaths among >70s in the period June 2020 to September 2020 were below the five year average, we can assume -
* that this group of people are taking good care of themselves
* that some of them would have died anyway, regardless of Covid.