8kun certainly does NOT host CP. That would be illegal. (8kun allows all LEGAL speech).

Of course, this doesn't stop users (or saboteurs) from posting CP to the site, but good moderators (depending on the board in question) will remove such material immediately and ban the bad actor who posted it.

Worst case, if a board's moderator is MIA, there are functions available on each post for reporting CP so that the site owner can get it removed ASAP.

This CP problem (and the above solution) is not specific just to 8kun, but is the same on all sites containing user content. Reddit has the same problem. Facebook and Twitter have the same problem, etc.

It's not just about CP either. For example, the New Zealand shooter did post his manifesto to 8kun, but he also live streamed his mosque attack on Facebook. So why does the media always complain that we should shut down 8kun (using the New Zealand shooter as their example why) yet you never hear them making the same complaints about Facebook, where the shooting was actually live streamed.

The reason you hear them complaining about 8kun and not Facebook has nothing to do with the shooting. Rather, it's because Facebook censors political speech, while 8kun doesn't. This is the actual reason they hate 8kun. The shooting is just an excuse the media uses while calling for 8kun to be shut down.