The relevant context is that there's a right-wing meme of calling people who disagree with you NPCs with the implication that they're just regurgitating talking

The relevant context is that there's a right-wing meme of calling people who disagree with you NPCs with the implication that they're just regurgitating talking points that they've heard, similar to how video game NPCs tend to have a small fixed set of lines that they say.