That is a funny video. Reality is next Nvidia GPUs will be using a better process technology than Samsung 8nm. If they had created RTX3000 series on better node like TSMC 7nm, they would be futher ahead than RX69/800XT. They would not need such large expensive heatsinks and would pull less power than RX69/800XT.
If you stick your RX69/800XT in Rage mode ( about +6% power) you are setting same GPU Power as the Nvidia Competition, and increasing the fan speed on the reference GPUs. Rage mode provides no clear benefit based on a number of GPU performance tests.