Every person is religious

[Ahriman]

I think every person has a religious impulse inside of them. For a lot of people, this impulse maifests as one of many known world religions. For others, such as atheists, this impulse manifests in different ways. I don't think this means every person is spiritual. It is possible to be "spiritual and religious" or "religious but not spiritual" but never "spiritual but not religious"

You didn't explain how are atheists religious or why do you think atheists are religious.

Ideologies. An atheist’s world view can be shaped by an ideology just as much as an Abrahamist’s world view can be shaped by Islam, Judaism, or Christianity.