>>99685003Because of the way numbers tend to work on YouTube, peak is a more valuable metric. Generally speaking, a stream will either climb to a stable number, then sit there for hours, or it will continuously climb until SC part starts or it ends. Peak is a pretty solid metric on the health of a channel because time often does not equate to more or less CCV. A longer stream will just make the average closer to that stream's plateau, rewarding longer streams despite them pulling the same audience.
Pic related is a very regular unbotted YouTube graph. See how average is worthless here? It plateaued relatively fast around 11,5k and would probably never hit 12k even if she went on for another three hours. So it's more valuable to say she hit 11,5k than, say, 7k average which does not really tell the true story.
But yes, raids are a big issue with this.