What? Did we watch the same video? The opposite is true. A large portion of the video covers the history of notation and how expressive it is. And he specifically doesn't say that an ugly numbering system is the solution. In fact, the opposite.
But while he mentioned some other systems in actual use and did distinguish between crazy reformers and serious/established reform proposals, he spent most of the video deriding crazy reformers and defending the traditional one. The best he said about "ugly numbering systems" was roughly what most conservatorians say (roughly paraphrased): "that's interesting, maybe it could have some limited didactic use."