It’s a great book especially its parody of communism. In 1981 I visited mainland China. Everyone appeared to be dressed the same in drab Chairman Mao “uniforms”. As tourists we got to eat at the top restaurants but notice that some of the top tables were taken by blue and brown uniformed Chinese. We asked our guide about why they could eat there while others who looked identical could not. He patiently explained that the people who were eating at that table had 4 pockets in their tunics which meant they were official members of the Communist party. Ordinary people only had 2. It reminded me at the time of Orwells prescient statement you mention, “All Pigs are equal, but some are more equal than others”. He surely knew the truth.