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If you take a look at a twitch chat or the logs of some random character names, they just spam emotes and words, it's very possible that there are just a large volume of children but it's really just like a wall of bots that work as a laugh track.
If streamer does a funny, there's a wall of emotes and people like call this a hive mind but it's literally a fucking laugh track from Jewish sitocom where bots are controlling the narrative of chat and if you expose yourself for being a free thinker the moderators will just ban you lol.
It's called "social proof" and it's a highly developed technique.