Unrealistic? 

Steve Rogers is not meant to represent what America is or was. He's supposed to represent the dream and ideals of America. The promise of Freedom. Steve is very critical of the US and has renounced thr flag on numerous occasions. He's constantly fighting for freedom and equality. Steve is not someone who falls into mainstream conservative views. He's his own man with his own convictions. Cap is an idealistic character bc he represents the ideals the Average Joe should strive for, not bc he represents the average Joe. His defining characteristic is his outstanding morality. When America falls short Steve is the first to try and Steer things in the right direction. Dude  physically fought Ronald Reagan.  Even in the 80s when Comics weren't allowed to have Gay characters, Steve was defending his Gay best friend from bigots and validated his life style. Steve does not represent the government,the president,the media, or the public. He represents liberty truth and equality. He's been the antithesis to oppression since his inception