I did not watch any streaming and I know nothing about the Shane`s racking in US Open,but I like to respond to your comment by giving this example.
Around two decades ago I was gambling with a Past US Open 9 ball champion. We were using Plastic Racks to rack the balls. I lost the lag and it was my turn to rack and his turn to break. I racked the balls and told him that I he needed to check the rack before he broke because I gave him a wicked rack intentionally. He checked the rack from various angles. . He said the rack is fine and I don`t see any problem. He broke the rack with full force and the cue ball flew of the rack like a missile, hit the wall and ended it`s journey by landing on the floor.
I was mischivous again when it was my turn to rack the balls and I warned him of my wicked rack. I was honest and told him that I cheated him with my mechanic skills. He inspected the rack with rack checking rituasl and said the rack was fine. He busted the rack and the cue ball flew of the rack like a missle and finally ended it`s journey and landed on the floor of the room. After that I never pulled that trick on him. He beat me 9-6.
The point I making is that my opponent, a past US Open champion, didnt find my rack to be a wicked rack but I only knew what I did to the rack.