October 11th, 2016 He posts a controversial viral video basically shaming people into voting for Hillary Clinton. There are other youtubers who accuse him of being paid or compensated for this. https://www.youtube.com/watch?v=pjS6OdY2dBQ

November 28th 2016, his mobile app "Beme" is purchased by everyone's favorite news network, CNN, for ~$25 million https://www.wsj.com/articles/cnn-buys-casey-neistats-video-app-beme-1480353128

January 28th 2017, This is what really made me curious. On this date he posts a strange video about visiting the Obama WhiteHouse for bowling, pizza, and beer. Does he know what is about to go down and is trying to get out ahead of it? https://www.youtube.com/watch?v=LnOzMj7v-64

January 31st, 2017, after being acquired by CNN, the Beme app shuts down suddenly after only 2 months.
https://www.engadget.com/amp/2017/01/31/beme-shuts-down/

Now I have enjoyed some of his previous videos and he seems like a decent enough guy, but the timeline of events and that "white house bowling" video just didn't sit right with me. He is also very well connected with many Hollywood elites. There are probably no rock-solid facts here, but you can draw your own conclusions.