I've figured this out for a while but either no one cared on there or posts talking about it got "shadow hidden" as well.
Every website does this shit now, youtube and reddit are egregious with it, try to talk to normies about youtube "shadow hiding" comments and they just stare at you with bovine eyes or go "I've never seen that happen to anyone" because they themselves never checked or their opinions are the same as the chat gpt garbage they use to filter comments in the first place. It creates a false consensus among people because they filter out "inappropriate" views or observations as well and we all know consensus seeking normies will just align their own beliefs to what they THINK is the majority consensus.
On all websites, 4chan included, even if you get past the AI filter, then a mod from China, India, or a tranny will just delete whatever you post anyway. Its not even shit like "oh you just want to say nigger", you can't even say "theres too much immigration" or sometimes negativity directed towards certain products get filtered, really anything "negative" seems to get filtered on youtube, not like you should take anything there without a pile of salt since they removed downvotes and pushed "popular" comments as opposed to "most recent" as the default option now but I'm going on a tangent.
Anyone who thinks 4chan is some sort of "free speech" or "non censored" forum is retarded and deserves to be surrounded by the indians, bots, and trannies that infest that site.