In this passage, the tone of the conversation has shifted from friendly to tedious, causing Stephen to feel disinterested. He observes that while lies or half-truths can provide insight into a person's desired image, too many of them detract from genuine interaction. This reflection reveals his desire for authenticity in dialogue rather than performative speech.
Stephen finds the current discourse to lack the qualities that make conversations enjoyable. The aggressive nature of the discussion forces him into a position where he feels overwhelmed, as if he must be coerced into admiration for the speaker's inflated claims. Ultimately, this experience underscores the importance of sincerity in human exchange, contrasting with the hollow bravado of the moment.