>> If you had children and one of them died as a result of a vaccine, you would not say is a small population affected.

This is just a smart way of saying "Won't someone think of the children?" It's not genuine for you to speak of general-population statistical percentages in one sentence then evoke the emotional response from someone's specific loved-one in the next.

>> There are other vaccines that can be used

We need to get needles in arms NOW to save the most lives; any delay or alternative approach is actively killing people.