I think the point is that, not only did you have filters on that let to assumptions, you then provided your lens for everyone to view through. You primed the pump, so to speak, transferring your filters to others.
Can you see how your expectation of seeing ritual and symbolism disabled your objectivity? And, if so, then can you see how you passed your filter along to others, to lead them to see what you were seeing?
If you are genuinely here to work on yourself like everyone else on the forum, you will make attempts to see yourself as others see you, warts and all. You will try to see where dysfunctional aspects of your mind try to rationalize their behaviour out of self preservation. You will endeavour to find the source of these dysfunctions to ultimately become free of them. This, of course, requires letting go of your ego, dropping your defenses and allowing painful realizations about how you, like everyone else, lie to yourself. It takes a lot of insight and feedback, not to mention blood,sweat and tears, if we are to live a more truthful existence.