They do indeed handle a lot of UGC, the vast majority of which is filtered out by AI and then teams upon teams to review inconclusive results / reports. Millions of users that can report what the AI and teams missed. With a quarterly revenue of $29 billion to fund their efforts. With all that it still takes 30 minutes for mass-reports to reach a human, weeks or longer for less reported content.

KF is operating at a loss with volunteers trying to filter the content and handling the reports; still the vast majority is handled within minutes.

The ratio of investment/resources to response-time should be in FBs favour, yet them being slow / inefficient is expected while a small forum "can't successfully moderate" if it takes 13 minutes to remove a problematic post that few users ever even saw.