>>110439453It doesn't mean anything, it's four years out of date and uses an unspecified number of unspecified posts ("rate per 100,000" is meaningless because it doesn't specify posts or sentences) to draw a graph, from which you're trying to draw a conclusion.
Frankly you could whip up the same thing in 15 minutes just pulling boxes around until they were lengths you "felt" were appropriate to each board to make an accusation of tumblrness as was the style in 2014 - five years ago - and then post it up on your Facebook group with your antivax memes and your rants Alex Jones quotes, you fucking boomer.