The current situation is different, if a 93 year old is vaccinated it doesn't mean a 2 year old will die. The younger generation has been shown to be less susceptible to the virus and on the whole if they do catch it they tend to not get it as badly as an older person
Yes, that is an extremely simplistic view, Oldwoman70.
A 2 year old will not receive the vaccine, but probably will in a few years time if Covid is still around (which I am sure it will be as it mutates).
However, the more older people are vaccinated, the less pressure on the health services; the fewer people who become very ill with Covid, the quicker life can return to normal. Consequently the 2 year old will have a more normal future to look forward to.