This was all figured out, like, 5-10 years ago, right? I know for a fact that I've seen people, perhaps expandedidea or Xelnia, stating that the true kill-screen is the rivet board of level 22 because of the fact that you can do the climbing glitch. I know for a fact that the delay was already considered by them, and they recognized it as being necessary to pass the kill-screen, and they also recognized that the kill-screen glitch would make the springs slow as well as the fact that the factory stage can be completed quickly enough to ensure that one can finish on time, even with the restriction of the massively limited timer on level 22. I feel this title, as well as the video's contents, are highly misleading. While it may never have been done in practice using a TAS or frame advance, the knowledge that this was possible has been there for at least 5 years.
Once I realized the video was just talking about a TAS, and not a human-viable strategy that was actually achieved in real time, I immediately thought, "So, is he just going to do the climbing glitch with Kong having a delayed barrel release?" And that is exactly what we saw, indicating this was not new, unknown information.