I'm curious about the meaning of the term "sankro rate."

Hello, everyone! Recently, I came across a video on YouTube titled 'Cortis-redred Sync Rate 100%'. However, I'm not quite sure what the term 'sync rate' means. I think it might be similar to the joke 'Sorry meme 97% accuracy' that often appears in Western media. The video features someone dancing like a meme, which makes it even more confusing. If anyone knows the exact meaning or usage of this term, could you please explain it in detail? I would love to hear your thoughts. Thank you!