Not to defend, but to understand. Last year our old "High School class of 19NN" group received about a dozen join requests per week from bogus accounts for a couple of years. At first they were trivial to discriminate because they were folks located on the opposite side of the Earth. But over time they became filled with pictures and names of (randomly generated?) Americans.

I could still tell because their profiles were sterile and had few normal comments or likes etc. Also a high school class has a very narrow age range. We recently landed a fatal blow by disallowing joins by "pages" and adding a few questions. A trickle continued but stopped recently.

The hamfisted false positive response you described is probably a result of the above.

`I could still tell because their profiles were sterile`

That is exactly example that parent posted about. Not every fb user is addicted to it, and has used it for long time.