AA/NA have an essentially Judeo-Christian philosophy that is cloaked in nonsectarian rhetoric to avoid scaring off those who do not adhere to an Abrahamic religion. If you look into the organization's history, it's continuing religious foundations become clear.
Aside from the religious aspects from the organization, there remain several basic tenets, some of them mentioned in the original article, that encourage the addict to substitute the support group for their drug addiction. A philosophy that requires religious support group attendance as an essential part of "recovery" often diverts the focus from learning important coping skills that do not feed back into the organization.
Almost every AA/NA meeting the state forced me to attend was begun and/or finished by the Lord's Prayer.