If a poem (or book) makes 10% of its readers more likely to become geniuses and contribute to solving world problems such as cancer, but 0.1% of its readers are more likely to commit suicide, should that book be banned by law?
Today's online society is based on posts created by content creators around the world, where algorithms can barely scratch the surface at interpreting their content, humans don't scale in reviewing every post, but statistics such as the above could be arguably inferred easily based on a combination of engagement (click/scrolls) data and attrition/session-revisits numbers.
Which is really problematic, because codifying into law rules and punishments based on aggregated outcomes and impact to us as a society (or to society sub-segments such as teens) makes it a very hard process to navigate between censorship vs. positive overall outcome vs. specific negative outcome on some outliers.