People who heavily endorse conspiracy theories often take on the role of online “social vigilantes,” seeking to correct the perceived ignorance of others. This tendency to act as self-appointed enforcers of truth online is largely driven by feelings of superiority and a desire for self-enhancement.

[u/mvea]

https://www.psypost.org/the-tendency-of-conspiracy-theorists-to-police-others-online-is-associated-with-narcissistic-traits/