Comment by jacobgkau

A semi-related term to the "NPC" thing is "main character syndrome." It's usually used derogatorily, but it's the idea that someone thinks they're the "main character" of the world; the people they care about are side characters who matter less, and people they don't care about (or know) don't matter at all. "The self as the center of the universe" is another way to phrase it.

Not sure entirely how that's connected to this thread's topic, but it is relevant in social media in general (and maybe TikTok moreso because of its "great" algorithm?)