What is going on with viewer counts ?

Here's a story probably not many of you know about: when something controversial happened, the stream count immediately dropped to 0 on HealthyGamer's stream.

Dr. K was talking to an incel about his life, and the incel brought up a girl he likes choosing a black guy over him (his words, not mine), and suddenly his viewer count went to 0 (literally zero, literally 2 minutes after the comment). Then again, I didn't watch it live, so maybe chat was trolling.

Source: https://www.twitch.tv/videos/592836251?t=0h28m51s (watch chat talk about the view count as it gradually drops to zero despite people obviously chatting). They all seem to be saying the same numbers quickly and chat is moving too quickly for them to be coordinating with each other, so it seems like a non-troll to me. Maybe twitch bugged, maybe staff artificially lowered the viewcount.

/r/Twitch Thread