The fastest way to get me to thumbs-down and abort a #YouTube video is to use a synthesized/AI voice. I probably am not detecting them at 100% accuracy now -- obviously there's a sampling bias issue in play -- but my sense is that the vast majority of them are still detectable within a few seconds, at least for now. Some others take a little longer, but eventually screw up with some bizarre pacing or pronunciation that exposes them as a dirt stupid AI piece of crap.