I am wondering why they did not break out social media by types. As there are social media sites not driven by the ad-eyes metrics that seem to be better at mor

I am wondering why they did not break out social media by types. As there are social media sites not driven by the ad-eyes metrics that seem to be better at more reasonable discussion but not always. Examples would be this site itself versus 4chan. Both are not ad driven, but 4chan seem to be toxic compared to this one.