It would be present on a guy’s computer and the network would block any communication with him. I think that’s as good as it gets.

No, from the way you have described it - people who have enabled a blocklist that block his account would block any communication with him and thus blacklist his child porn. But anyone else who enters the website new without any blocks up would see it.

I think you’re dead wrong there. I think that everybody hates being told what they can say and who they can talk to.

This debate has come up many times before on the fediverse. Most people do not support the site being turned into 4chan.

Many instances are run relatively stricter than other instances (such as beehaw and lemmy.blahaj) and specific communities require higher levels of moderation maintain a level of quality (particular subreddits not present on the fediverse function like this right now such as askscience, askhistorians etc).