> "technologists know how phones really work, and many have decided they don’t want their own children anywhere near them"
I do. And I have. Although I speak for only one technologist.
> "These articles assume that techies have access to secret wisdom about the harmful effects of technology on children."
Some of us do because we _design_ it, and under conditions of NDA. Only recently leaks of emails proved this precise point. Many more of us have "not-secret" wisdom as we proudly publish scientific papers about it. Moral judgements aside, we know what this stuff does. But the author attempts to insinuate the language of conspiracy.
> "Based on two decades of living among, working with, and researching Silicon Valley technology employees, I can confidently assert that this secret knowledge does not exist."
Then either the author has not been living, working and researching very well, or his confidence is misplaced.