It is not about "if it makes sense" (besides, I think it does). To the best of my knowledge, vendors will in most cases simply have to ship their changes to the kernel. The question to the speaker was if those vendors are aware of this and are prepared to have the necessary infrastructure. The fact, that the even he, being a consultant as far as I understood, did not (or did not want to?) understand the question gave a good picture of the current situation IMO.