The next line immediately after the one you quoted was "Admittedly, it seems that their efficacy to help people in crises (not necessarily suicidal) is far grea

The next line immediately after the one you quoted was "Admittedly, it seems that their efficacy to help people in crises (not necessarily suicidal) is far greater than their impact on suicide rates." Crisis hotlines are definitely doing things, even if the suicide prevention analysis bit is inconclusive.