Good point, but no.
Agreement is not necessarily an indication of conformance. You have to also consider to what degree that agreement, or disagreement, must be exercised. I agree and disagree with many political opinions, but I don't join groups who share my political opinions. My personal opinions often remain personal. Even if I did join a group of politically like-minded persons I would not go on regular protests to merely advertise my opinion. I certainly wouldn't take it to a higher level by going to a counter-protest or berating those I disagree with.
Typically the more important and advertised a social agreement becomes the less it is about the subject matter agreed upon and the more it is about exercising forced social norms of a group. In math and logic agreement is attained by a proof and not by some social pressure to force a predetermined outcome.