As a secular person myself, I'll have to respectfully disagree, and admit that you're right.

What do I mean? Well, yes - there is a new cult going around, called Scientism. Remember however, that not all Science (tm) is made equal.
Some (pursues the narrative) is holy, unquestionable and its mistakes are within the realm of acceptable error.
The other (questions the narrative) is to be rejected outright - it will be trialed in a court of petty remarks and nit-picking, or even false accusation, where the accusation is the proof ("Trusted sources say this is false"). This Bad Science (tm) is to be eradicated from the faith of the earth.

Now why I disagree - I don't think secularism in and of itself feeds this beast. Rather, the same mechanics applied that can turn religion from the strength of a community to its poison, like sour milk or spoiled meat.
Science, in so far as I was taught it, is a matter of constant questioning and checking yourself. As one lecturer told me - "You do an experiment to DISPROVE your theory". So the default is that your theory is wrong, until it has been tested so many times that we can assume that it has truth to it.
The modern zeitgeist (or human nature, perhaps) doesn't work that way. We want gratification. We want a cure for cancer, and we want it yesterday. Never mind that these experiments are always very limited - never mind that cancer can manifest in a million ways outside the lab, and definitely don't mind that there's a gigantic industry built on the collective suffering of cancer patients worldwide.

My TL;DR is - secularism has the open wound of lacking a greater purpose, which can be used as a Trojan horse by nefarious players ("Do it for grandma/the community!") wishing to pull your strings. However, if secularism is combined with critical thinking and a self-discover of a greater purpose, I find it to be a powerful weapon. Thank you for reading my TED!

Heel dol op je posten, trouwens :) Als je dat hebt gemerkt