With Covid, the risk of death per 1000 in the 70-79 category is 8 (approx 10 for males). Now if your chances of dying whenever you got into an aeroplane were 1 in 100, you'd call that a pretty significant risk of death, wouldn't you? It'd probably make you pretty wary of flying, no?
So yes. 'Significant'.
Your analogy is mendacious. The risk isn't a 1 in ahundred chance of dying if you get in the aeroplane, your risk is 1 in a hundred of dying if the aeroplane crashes. As you well know, 1 in a 100 70-79 year olds haven't died because they left the house.
The risk is infinitesimal.
It's not mendacious. Millions of people in the UK are estimated to have already had the disease, so even if you consider the lower end of those estimates, that is already a significant proportion of the population. So given that, the risk of catching it is far from infinitesimal and, given that the death rates among males aged 70-79 are 1 in 100, there's nothing infinitesimal about those risks either.