"Is it worth it" is an ongoing question; at some point, it's probably not, but we're not there just yet. Our vaccination rates are still pretty low. And remember: the bellowing about masks started before we even had vaccines.
It is a political and value judgement to err on the side of minuscule improvement, if any at all, from wearing masks and mandating vaccines for cohorts that statistically don't need to worry about covid, while degrading the social development of children, and hurting the wider economic interests of people affected by endless restrictions. These are all political questions. There are no all encompassing "facts" that delineate who is harmed and who is helped and in what proportions. That is the realm of politics.
Not really, 221 Million have had it-least 1 shot in the US and another 73 Million are under 18 and are at almost no risk (558 total deaths).
Other developed countries are not masking kids as young as we are doing. Countries like France are rescinding mask mandates now. For us, there is no end in sight, even in highly vaccinated areas.