The enduring appeal of the scene relies entirely on brutal tonal contrast. The child delivers his complaint with unvarnished, childish desperation. The grandfather delivers the response with dry, unsympathetic finality.
In everyday conversation, complaints about excessive work usually invite polite empathy or diplomatic deflection. The grandfather provides neither. His sharp response shreds social niceties. It acknowledges the boy's suffering immediately, validates that the situation is terrible, and commands him to keep working anyway.
Internet culture thrives on rapid-fire emotional economy. When workers encounter demanding bosses, unrealistic project deadlines, or bureaucratic obstacles, the quote provides an ideal vent. The phrase "Well that's too damn bad" serves as both an internal monologue for overwhelmed workers and a sarcastic indictment of systems that demand endless output regardless of personal exhaustion.