Immigration doesn't drastically increase your chances for depression, anxiety, body dysmorphia, disordered eating, insomnia, and executive dysfunction.
The analogy is between what happens afterward, due to missing the enculturative influence: failing to make friends at school due to lack of primary enculturation; vs. failing to get a job related to your degree due to lack of tertiary enculturation (a.k.a. "lack of culture fit.") Both situations can result in environmentally-induced mental illness.
Many things can induce mental illness, but few can so reliably and universally increase such a broad swath of mental illnesses, and they usually aren't literally engineered to be addictive.
