... its not a belief system when its digital ...
Insisting that a demonstrable, measurable difference is "insignificant" is a subjective judgment and so very much part of a "belief system." It doesn't matter if we're talking digital, analog or kumquats. A difference that may not matter to me may make a very big difference to you. Anyone who insists his preferences are the only valid preferences, or who attempts to disguise a preference as a fact, is very much promoting a belief system.