No that isn't what I said, and yes it would be just as ridiculous as attributing the same value to preventing a 90 year old nursing home patient from dying of an endemic respiratory virus as we do to preventing deaths in plane crashes.
That's going to alter the number by less than an order of magnitude. The benefit still is massively larger than the cost.
Can you link me to a study which does a reasonable job of attempting to come up with a "Covid deaths prevented by vaccines number" while taking into account the effects of increased seroprevalence, decreased virulence of the virus itself, and the "no more dry tinder" effect?
The 20M figure was from an estimate in Lancet Infectious Diseases. It was for the first year, not the entire pandemic.