You really can't judge a video without understanding it, and AI (one of the great misnomers of our time) cannot understand anything. So no, I don't believe automation can solve this problem. It can help, but you'd need final review by a human, and that human would need to be a reasonably intelligent, reasonably fair-minded person who won't just decide to block things they find personally disagreeable. A minimum-wage office worker with a list of simple rules like "no guns" won't do.