> If Peep Show has any sort of singular thematic message, it’s that low self-esteem is the root of all evil.

Interestingly this is a similar conclusion that the Unabomber came to in Industrial Society and its Future:

https://web.cs.ucdavis.edu/~rogaway/classes/188/materials/In...

Kaczynski called out low self-esteem as one of several foundational components in the psychology of his hated enemies (“leftists”), whom he believed to be the primary scourge of society (ironic, coming from a mass murderer). Modern analysis of incel culture also places low self-esteem at the center of the problem.