This post is kind of sad. It feels like he's advocating for human depopulation since the trajectory aligns with horse populations declining by 93% also.
No one wants to say the scary potential logical conclusion of replacing the last value that humans have a competitive advantage in; that being intelligence and cognition. For example there is one future scenario of humanity where only the capital and resource holders survive; the middle and lower classes become surplus to requirements and lose any power. Its already happening slowly via inflation and higher asset prices after all - it is a very real possibility. I don't think a revolution will be possible in this scenario; with AI and robotics the rich could outnumber pretty much everyone.