Screenshots are not a trustworthy medium. Many of the articles published about Kiwi Farms contain significant factual errors and rarely cite sources for the claims they do make.
For example, the CBC recently published an article claiming that the Christchurch shooter "revealed his intentions (on Kiwi Farms) hours before carrying out the attack".
https://www.cbc.ca/radio/day6/kiwi-farms-online-forum-1.6565...
If you read articles from 2019 it was claimed that the gunman posted on 8chan shortly before the massacre. The claim that he posted on Kiwi Farms hours before is completely new and unsubstantiated.