Nope and nope.
Originally Posted by Kalopin
Hypothesis: "A hypothesis (from Greek ὑπόθεσις; plural hypotheses) is a proposed explanation for a phenomenon." One important feature of a hypothesis is that it can be tested.
Theory: "A scientific theory is a set of principles that explain and predict phenomena." Informally, a theory is a hypothesis whose predictions have been tested via experiment, modified to fit the observations, and tested again, repeatedly.
Your "collective of many people that agree to the possibility of an idea" is akin to a religion, maybe, or a set of social rules.
"For shame, gentlemen, pack your evidence a little better against another time."
-- John Dryden, "The Vindication of The Duke of Guise" 1684