Check your original comment. You did not qualify that only “profound secular beliefs” are religious in nature. Rather, you speak in general saying “secular beliefs are religious.” So now you’re moving the goal posts.

Using your original logic, -any- belief can be religious in nature. “Today was 85” -is- religious from your original position because perhaps people ritualistically check the weather every morning like a prayer. The weathermen are like priests disseminating knowledge, and small talk is used to find other weather checker cultists.

It does not matter what belief Id offer up, because it will match your original definition because your original definition is so broad as to be meaningless. Other comments have already said this in fewer words. If you are unable to identify what it would look like if you were mistaken, then you shouldn’t be confident that you are correct. So how could someone identify the difference between a secular belief and a religious belief?

The Church-Turing thesis? That ZFC is consistent? That the driving force of history is primarily material relations between groups?