why not religionism ?

[Irreligious Atheist]

I would just say anti-religious bigotry. Google says religiophobia is a term some use - A fear or hatred of religion, religious faith, religious people or religious organisations.

‘Phobia’ doesn’t necessarily indicate discrimination, though.

Boru

Homophobia.

I don't like religiophobia either. It bunches together hate of religion and hate of the religious like the term Islamaphobia does, and that way, Islamic apologists can basically call us bigots for having issues with the religion of Islam. That's why I stick to calling it anti-Muslim bigotry.