Well done Jason.
I wasn't always against it, but changed where it would identify my kids. It took time for my wife to understand my point of view though.
There's multiple dangers for kids, including:
Identity theft - easy to find DoB, maiden names etc.
No control over their privacy. There's so much out about them, they have lost control of their story before being able to consent to losing it
Mental health issues - parents tend to post all the "best" of their children growing up, which leads to kids having anxiety issues because they only see value in those "proud parent" moments, which you can't replicate every day.
A friend of extended family is a child psychologist. They are already dealing with this now, and Facebook has only been around ~17 years.
Just a few examples.
I won't criticise Brooke, other than to say she's probably ill informed. That picture of her kids has already been shared outside of instagram. She probably needs some education rather than scorn.