It's the model in use. Calling it "wrong" is at odds with the medical community. I get it, but it's not a compelling statement.
Regardless, coinciding with tighter tracking of populations, especially from schools, the last few decades have shown that young girls are at high risk for depression and suicide. Some calling it an epidemic. I'm sure you can find the TED talks, news articles, etc
Notably, this is backed by CDC data. It is not stated what is causal nor how effective anti-depressants are, as a treatment, but they are an option that many parents and children choose.