That's not the point in contestation. Specifically it's

"how obsessed we are with giving milk to kids because it’s so healthy"

The word "because" is a fascinating bridge. Whatever follows after reveals unstated assumptions hidden deep in the speakers mind.

I'm objecting to the specific premise that it's some rational decision made individually by each parent based upon nutrition.

Instead I'm claiming our cultural habit of feeding of milk to children is entirely manufactured by the organizations that produce it. There's lots of documentation to demonstrate this.

Whether or not it's a good idea is immaterial.

I've honestly never seen anyone within that research domain state otherwise, maybe you can enrich my knowledge there.

I and other readers are excitedly open to new perspectives