Ahhh, another Sam Pepper thread!
Huh? It's not at all up to YouTube to serve justice. Do you expect them to close his channel based on some unproven accusations? Unless he violates their terms and conditions, at the moment I see no reason for YouTube to take action against him. It's up to the authorities to decide whether or not he needs to be prosecuted. Don't get me wrong, I'm not a fan of him or anything, but these are very serious allegations that need to be investigated thoroughly before jumping to any conclusions.
As for the video that some of you refer to as sexual assault, I do believe that it was staged, thus consensual, so no sexual assault. Not that it was in good taste, but nothing illegal.