This video did not explain the ""AI"" part of the tech at all. Seems to be basic pose estimation? Nothing fancy really.
But what people really will want to talk about is VAR and if its good. Personally, I've found it adds to the drama, making a better product.
Yes, you are correct. The explanation does't dive deep into the AI part of the system. It talks about the sensors in the football and the video cameras tracking everything happening on the pitch.