I don't want to stand on any side of the argument since I'm not very informed about KiwiFarm incident, but Wikipedia in general is not really a reliable source of truth.
Skimming the references, almost all of them seem to point to news pages created after the CloudFlare ban, none of which seems to provide sources for their claims themselves.
Wikipedia does get things wrong sometimes, but I'm not sure where to find more reliable information. Wikipedia does have a pretty good history of handling controversial topics like the Armenian genocide, the killing of Michael Brown, and lampshades made of Holocaust victims' skin.
I agree that Wikipedia eventually converges to something close to truth. However, that takes time. Since the event in question is fairly recent, I'd still take everything written about it on Wikipedia with a grain of salt.
Skimming the references, almost all of them seem to point to news pages created after the CloudFlare ban, none of which seems to provide sources for their claims themselves.
Obligatory xkcd: https://xkcd.com/978/