This is simply another case of manufactures on the CMPs ramming stuff into the code before they can actually deliver a reliable product.
Perhaps if someone like the CPSC would require that they recall all of the non-performing or obsoleted products at their cost, they would not be in such a hurry to get them in the code.
I would start with all of the obsolete AFCIs the public was forced to buy before they were perfected (as if they are perfect now).
These things should be optional until they work well enough to create a market.
