i originally updated the graph because me and a few others talked about how 6s had a much bigger presence in the past, not just pure team count, but it felt like people were generally more informed on it and aware of its presence.
I pretty much always knew that competitive tf2 existed when i started playing tf2 because most of the popular youtubers back in the day created casual and competitive content hand in hand, guys like star, nislt or muselk probably played a big part in getting people into comp. these days it feels like the division between the casual and competitive audience is stronger than before