"Implications of all the available evidence...
Although vaccines remain highly effective at preventing severe disease and deaths from COVID-19, our findings suggest that vaccination is not sufficient to prevent transmission of the delta variant in household settings with prolonged exposures. Our findings highlight the importance of community studies to characterise the epidemiological phenotype of new SARS-CoV-2 variants in increasingly highly vaccinated populations. Continued public health and social measures to curb transmission of the delta variant remain important, even in vaccinated individuals."
Note the commentary on vaccination being "highly effective at preventing severe disease and deaths"...plus "Continued public health and social measures to curb transmission"...i.e. Masks and Social Distancing..."remain important, even in vaccinated individuals"...so, my reading of the report, while Delta is shown to be highly transmissible, vaccinations are essential in reducing severe disease and death...and, they marginally reduce transmission...good, but not great. With that in mind, you're surely not advising the public not to get vaccinated are you?...if for some reason your answer is "Yes", then what are the benefits you project?
As for the kids, check out the attached link from the respected journal "Nature"
Link: https://www.nature.com/articles/d41586-021-02947-z