Haimy on empirical studies –
you have to be careful extrapolating statistics from average population with 1.5 kids per family where parents are not involved with kids and kids watch whatever they want online with, byh, large families with dedicated families.
Just a practical thing – many families got a chance to discontinue medications that schools required kids to take and the kids had a chance to learn how to function on their own. Not all families used that chance, of course. Some doubled down so that kids do not bother them too much.