Although this is being called a manifesto it is really three pages from the diary of the Aiden / Audrey Hale aka Nashville Shooter or the Trans Mass Shooter.
https://www.dailymail.co.uk/news/article-13505849/Nashville-school-shooter-Audrey-Hale-trans-kill-puberty-blockers.html
https://www.dailymail.co.uk/news/article-13505849/Nashville-school-shooter-Audrey-Hale-trans-kill-puberty-blockers.html