1) your child's test were conducted in the lunch hall while lunch was going on.
2) You were expected to take the SATs in a gynasium during a basketball game.
3) when your kids go to the library to study everyone is allowed to run around
4) your kids try to do their homework in front of the tv while talking to their friends on the phone.
I suspect you'd be outraged. We know noise is distracting and affect productivity. I don't understand what is controversial about that claim.
My agenda is that I want to be productive. I kinda feel that if you pay me to do something, I should be able to make my best effort. I know by looking at my svn/git commits just how productive I am. It's very empirical.