There is not much to see. If you are thinking the planes in the video you shared were "wobbling" you are a very picky pilot. But that is happening in a completely different flight condition where the flaps are deployed, speeds are slow, the pilot is trying to maintain a fixed bank angle (zero!), and the airplane is in ground effect, which tends to amplify wing-induced roll effects. The 9/11 airplane was at high speed, no flaps, and was in a freehand banked turn (no wobble due to pilot corrections). Those conditions tend to produce smooth dynamics.
There is not much to see. If you are thinking the planes in the video you shared were "wobbling" you are a very picky pilot. But that is happening in a completely different flight condition where the flaps are deployed, speeds are slow, the pilot is trying to maintain a fixed bank angle (zero!), and the airplane is in ground effect, which tends to amplify wing-induced roll effects. The 9/11 airplane was at high speed, no flaps, and was in a freehand banked turn (no wobble due to pilot corrections). Those conditions tend to produce smooth dynamics.
Yes, you could well be right. I might be trying to invent things in my mind that should not exist anyway.