I think it's time for us to address how horrible 4chan is when it comes to this stuff.
So many threads of loli/shota filth and the mods are completely complacent with it.
For example, despite loli/shota being banned from every board except /b/ and /trash/ (I say it should be banned on all boards but i digress.) the /ic/ board has a regular loli/shota general that stays up despite it should be against the rules:
https://boards.4chan.org/ic/thread/7934545/lsg-loli-shota-general
And they're invading the entire site.
Now allow me to reveal a personal story of mine.
I use a trip on 4chan, and one day during a Mouthwashing thread on /v/ i called out the devs for using shock tactics to try to regain their 15 minutes of fame and i made a statement against rape.
This caused someone to become so obsessed with me that they stole my trip and impersonated me.
After the thread was over i thought it wouldn't happen again, until i ran into the exact same guy later in a loli thread as i was outspoken against it and there he was defending loli using my name and trip, convincing others that he's me while saying and posting disgusting pro loli propaganda.
I wouldn't know how serious it was until later someone confronted me saying they have evidence on me and that they sent to the FBI. Turns out the guy impersonating me was posting child pornography with my identity convincing others that i'm the one doing it.
And he didn't stop as later again another online vigilante confronted me with even more evidence and as far as i know the guy is still posting child pornography on 4chan and the people there, especially the janitors and mods, are either complacent or in on it.
And i can confirm that at least one of the loli threads on /v/ i was fighting against had child porn posted in it and stayed up long enough for several anons to look at it and support it.
TL'DR, 4chan is run by pedophiles and the 4chan staff are doing nothing about it, if not even joining in on it.
The image i provided is proof of what i said about my impersonator is true.