In Sophie Kinsella's book "Remember Me?", the narrator feels compelled to defend Eric, who is very particular about nutrition. Despite the strong language used to describe Eric’s strict views on food, the narrator argues that he is not overly aggressive but rather deeply concerned about healthy eating habits.
The comparison to Hitler serves to emphasize the narrator's frustration with Eric's extreme food beliefs. It highlights the tension between a healthy lifestyle and the rigidity some people exhibit towards food choices, suggesting that while Eric's intentions may be good, his approach is perceived as oppressive.