https://techcrunch.com/2019/03/13/jack-dorsey-records-podcast-with-fitness-writer-who-claimed-vaccines-do-indeed-cause-autism/

Jack Dorsey, known for making tone-deaf statements on the platform he co-founded, is in the middle of another controversy. This time it is for plugging a podcast he recorded with fitness writer Ben Greenfield. Greenfield has espoused anti-vaccination views on Twitter and other platforms, continuing to do so despite measles outbreaks in the United States.

Dorsey retweeted Greenfield’s tweet about their podcast interview, commenting “Great conversation, and appreciate all you do to simplify the mountain of research focused on increasing one’s healthspan.”