This is just not true. Human review is conducted. Apple will conduct human review, facebook conduct human review, NCMEC will conduct human review, law enforcement will conduct human review, lawyers and judges will conduct human review.

Over the years there have been countless articles etc about how fucked up being a reviewer of content flagged at all the tech companies is. https://www.vice.com/en/article/a35xk5/facebook-moderators-a...