A couple of those I'm not so sure about - the shoe one is likely as simple as her changing shoes for the ceremony. If the shoes that matched her dress were uncomfortable I could see a woman wearing them just for the ceremony and then changing shoes. The camera angles one is a different enough angle that some of the people standing further back might not have been easily visible. But a lot of them, yeah. Not only is the stuff outside the windows different, but I'm pretty sure the windows were different too. And it more closely resembles the oval office movie set than the real thing. And the military wouldn't just change the Presidential salute they've used for decades. Plus there's that video of all the kids running out of the white house in the middle of the night. Makes me wonder if Biden's Presidency really was a sting operation. He seems like the kind of person who'd be willing to sell his side out to save his own ass.