> I live in Alaska, there were only like 3 months were things were actually curtailed in any meaningful way.

Here in Illinois it was over a year, possibly two in some places. The schools didn't return to in-person right away after the government mandates were lifted.

Edit:

> But mostly, I think it's the phones that are having the biggest impact on social development and probably on learning too.

Please re-read the comment from the other person you originally replied to.

(2nd edit: removed something based on a misread)