It is peers that will determine your social reality.

As long as we don't mind using people by causing harm and imposition so people can be "experiencers of good", then none of it matters.

true it is the case. The general opinion usually is what governs the stays quo unless a new view, innovation, idea or discovery makes waves and stands to critical review

interesting statement. Using people/imposing on others to bring about greater good/benefit or forward society.

How do we know when imposing on people's beliefs is beneficial verses when it is simply oppression of individual freedom?

If it is unnecessary to cause the harm TO THAT PERSON affected.

Then, how does the majority determine those that are so genius we cannot understand their vision for the future/innovation/invention and those that are spouting mere non-useful nonsense. — Benj96

Even if the standard of objective truth is fundamentally flawed, it can prove useful in determining the category to which a particular theorist belongs.

I think it's usually the case that theories that describe real phenomena and actual states of being of the objective world make themselves known to more than one observer-thinker.

Truth-bearing theories tend to add new and pivotal information to the known body of accumulating information and understanding pertaining to a particular inquiry or discipline.

Other theorists working in the same field, possessing a database of information pertinent to the new theory, likely will quickly perceive said pertinence and start adopting-accommodating the new theory to the accumulating database.

I conjecture much of the discovery of humanity is communal.

If an individual theorist discovers a major joint, viz., turning point in an evolving understanding of something, and thus opens a new and essential chapter within the over-arching theory, then that person, having instigated a quantum leap forward in the evolution of the theory, likely will be saluted as a stand-out pioneering genius as for example, Einstein with his Theory of Relativity. Even in his case, however, it's a well-known fact that Riemann's geometrization of gravitation laid a theoretical foundation essential to Relativity.

In the case of a delusional theorist, lacking the experimental verification establishing correspondence between abstract theory and empirical experience, his-her postulations will remain private and unverifiable. Society, having no access to empirical experience of such theoretical claims, will likely dismiss them as ranting nonsense.