I can't see that. Not knowing about it would be impossible position to maintain since you would be getting reports. Now you might say they will disable reports which they might try but they have to do business with other companies who will require that they do. Apple isn't going to let your social media app on if people are yelling at Apple about the child porn and bomb threats on it, AWS will kick you as well, even Cloudflare might consider you not worth the legal risk. This has already happened multiple times even with section 230 providing a lot of immunity to these companies. Without that immunity they would be even more likely to block.