Final answer:
Macy's point of view in the passage best aligns with him identifying as an American who has a deep understanding of American writers and their contribution to the cultural dialogue between America and Britain.
Step-by-step explanation:
From the provided information, the most accurate statement about Macy's point of view would be that he identifies himself as an American with knowledge of American writers. This can be inferred from the description showcasing a positive mood towards the United States and suggesting a connection between American and British cultures through literature, which is best reflected in the recognition of something familiar, like a cultural artifact, during his visit to Broadway. This viewpoint is indicative of an American perspective, acknowledging the diverse and insightful record of the nation presented by American writers and equating his understanding as stemming from this cultural identity.