According to Millie on twitter the stream was originally supposed to be different, but some people didn't read the instructions properly and it went off the rails.
Coincidentally yesterday Kyo mentioned on Doppio's birthday stream that Enna never reads the stream-prompts on Discord (because she's lazy as fuck)
https://www.youtube.com/watch?v=-CwqOYXrtok&t=7110It's also notable how the person to call out 4chan in the beginning was Slumsaint, who everyone knows is Enna. The same slumsaint who said that Kyo was her oshi, who bitched about Enna's virginity status, and said she wanted to fuck a black man named Steve Harvey. This is very obviously Enna.
The clues have fallen into place. The one who turned the stream into what it became was Enna. She used the stream to vent at her haters and didn't read the stream-prompty.