Secular people have a humility problem. When you're deeply religious, you know your knowledge & sensemaking is imperfect. You have an intuition that while truth can be known, humans are deeply fallible in their quest for understanding.

Most secular people, especially those formerly religious, recognize that institutions are flawed, and feel more justified choosing their own reason over "the establishment". In many ways this skepticism is good, and leads to great scientists and engineers. However...

It becomes easy for secular people to be over-confident in their sensemaking, since there is no admission of an ultimate source of knowledge. This is contrary to popular thinking. Aren't religious ideologies the ones that claim ultimate Truth and Revelation? Yes but...

The claim that Truth exists is very different than the claim that one has perfect access to it. Religious traditions often make claims that the nature of God, or the nature of Truth is "ineffable". It can't be known perfectly. This may be a cultural adaptation for humility.

Confidence and humility is a balancing act. Of course many religious and secular thought leaders are overconfident, and some are underconfident. My recommendation for quality sensemaking:

Remember that ultimate truth is ineffable. There is a reality of atoms and energy states that exists out there, but the map is never the territory. Try to build the very best maps you can, and be open to erasing and redrawing the borders when you learn your map is inaccurate.