If literally the only evidence you had was that the overwhelming majority of people professed to believe in religion, then you should update in favor of religion being true.
Yes, but this is different from a generic "People being religious is some evidence that religion is true."
P(religion is true | overwhelming professing of belief) > P(religion is true | absence of overwhelming professing of belief).
In other words, I think my two formulations are isomorphic. If we define evidence such that absence of evidence is evidence of absence, then one implication is that it is possible for some evidence to exist in favor of false propositions.
r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.