It is simply a claim, it is one that I would probably attribute to myself sometimes if I'm being honest! I am forced into the act of secular belief like all of you after all, I'm no better.
You can feel secure in your beliefs without feeling superior because of them, and you can understand the specificity of our modern scientific framework without sacrificing the force of the scientific story.
If you really really think the scientific method or whatever is the end all of human belief, that is precisely a reason to try and stay humbled in that belief, not the opposite. That is just being a good scientist.
If you feel insulted by what I said, that is quite telling of your own insecurties and another reason you should pause and breath and listen to others, instead of telling yourself over and over again how smart you are.