Kickstarter campaigns follow a similar pattern to the ethereum graph shown in the article. It’s not because of a malicious user who wants to secretly own all the kickstarters. It’s because time-limited crowdfunding campaigns tend to attract the most donations at the beginning (when enthusiasm/press is high) and towards end of the campaign (when FOMO is high).

Also the author should really state in the article that the swarm graph is not cumulative.