You are manufacturing an absurd allegation. Wikipedia put the wikiness of their model right in the name. If an "average user" doesn't bother to research their resources [0] or understand modern language then the problem lies somewhere in our educational system, not in the number of disclaimers on internet websites. It takes a special kind of curious person to want to find information on a subject but not wonder where it came from.
I'd say Wikipedia is really to blame for creating this false sense of trust on their platform. Not that they are completely unreliable, but they are less so than they seem to an average user.