Given that some of the the lowest vaccination uptake rates are in black and latino communities who have historically strained relationships with the medical system -- as well as some of the highest prior infection rates -- your comment is misinformed.
Whatever the current level of immunity may be, cases, hospitalizations and deaths are all rapidly declining across the US. Moreover, the vaccines are all close to 100% effective at preventing severe illness. There are a great many reasons to be optimistic about our current trajectory, and no immediate need to put children at risk to get where we need to go.
[1] https://poll.qu.edu/images/polling/us/us04142021_uscd43.pdf#...
Moreover, empirical reality differs from polling. In New York City, for example (a big, liberal, multi-ethnic city), Latino people lag whites by 12% in vaccination rate; black people lag by 17%:
https://www1.nyc.gov/site/doh/covid/covid-19-data-vaccines.p...
Whatever people are telling pollsters, it differs from their actions. Maybe they have "plans" to get vaccinated, but they're not doing it right now.
A different poll said Hispanic people are the most inclined to get vaccinated. But politics was the strongest correlation still.[1]
Cumulative vaccination rates reflect earlier hesitation. Also scheduling difficulties, transportation difficulties, and wanting to get vaccinated by a trusted provider.[2] But targeted efforts have closed or nearly closed the gaps in many places.[3]
[1] https://abcnews.go.com/Politics/trust-johnson-johnsons-coron...
[2] https://www.npr.org/sections/health-shots/2021/04/26/9899620...
Vaccination of children wouldn’t be needed if most adults got it. But they don’t because they’re dumb. So now they’re saying children can get it if they’re parents want. It’s a choice to do your part to reduce the spread. Pretty simple.