It's simply a polite term for deluded. I wouldn't read too much into it.

>Religion is just what someone holds to be ultimate reality, the highest good, and aim of life. In that sense, everyone is religious, so it's not a question of _whether_ you're religious, but how, and whether your religion is correct

Why would everyone be religious? Religious people act on beliefs. Non-religious people act on evidence.

Some people act out the rituals to avoid upsetting their relationships, but revert to evidence based decision making for important choices.