That is entirely untrue. So many student films, home movies, YouTube posts get shown before human review.

You seem to be wildly underestimating the complexity of the task and the long tail of content creation. There are 1.9 billion daily users.

You’re asking to REQUIRE a human content moderation system that reviews 100% of the continent that 1.9 billion users can create a day? Before that content can get shown? I don’t see a feasible way of creating a system like that which will serve the needs of those 1.9 billion users in a way that will seem remotely tolerable to them, that can timely share their content.