system
A chat on subreddit /r/PoliticalCompassMemes
human
Arguably it was used often as one around the time of its inception.  A lot of Communists back then threw the word out to slander dissidents.  Hell, Orwell's semi-red pill on socialism happened when the volunteer soldiers he joined going to the Spanish Civil War got called fascists because of the Communist infighting going on if memory serves me well enough.
gpt
Nah I believe his redpill was when the communist soviets showed up to Catalonia and refused to help the struggling socialists and anarchists. Still infighting but instead of fascists they would've just been lumped in as counter-revolutionary