My observation is the complaints haven't changed over the decades, suggesting the stated reason - two years of at-home teaching - likely isn't the actual cause.

My observation is the complaints haven't changed over the decades, suggesting the stated reason - two years of at-home teaching - likely isn't the actual cause. I hardly think people need to be taught that bringing a child to work is something schools have to teach. Instead, if parents had enough money to afford a sitter, then they wouldn't need to bring their children to work. If the US had good quality government-funded preschool starting at age 1, and 15 months of combined government-funded parental leave, then people would have less reason to bring their children to work. Placing the blame solely on the employee means implicitly skipping these alternative remedies.