[anonymousab]

>and that YouTube engineers can create an algorithm that automatically marks 95% of video (probably low, 95% correct labelling is easy to get; 99% is usually necessary to outdo humans)

I think a crucial question is whether the numbers quoted are before or after the current set of automated filtering (content id and any existing mechanisms to catch bad, illegal or offensive content.)

They may already be catching the vast majority of easy and fingerprintable things. They may be at the barrier where false positives increase at a high rate.