And there's a fact here that's very hard to dispute, this method works. I can give a computer instructions and it "understands" them in a way that wasn't possible before LLMs. The main debate now is over the semantics of words like "understanding" and whether or not an LLM is conscious in the same way as a human being (it isn't).
Is/was the same true for ASCII/Smalltalk/binary? They are all another way to translate language into something the computer "understands".
Perhaps the fact that it hasn't would lead some to question the validity of their claims. When a scientist makes a claim about how something works, it's expected that they prove it.
If the technology is as you say, show us.