I think I just explained its relevance. Your rebuttal wasn't based on the technology itself, your rebuttal was,
"Does Toyota seem like a company that caters to a niche segment, especially in sports cars? If so, then Toyota is even more stupid than I thought."
To be clear, my most recent post clarifies my position further.
"As far as preference. I agree, only a very small minority of users prefer manuals, but that's why I am trying to emphasize that manuals might have relevance for sports cars."
It might not matter to you, but many people are in fact wealthy enough to own a sports car, and this kind of development might convince them to get an EV instead of an ICE vehicle.
Furthermore, the very first Tesla, was in fact the Roadster. I suspect if this technology was in an experimental BYD instead, you'd be a lot more interested, regardless of the merit of the actual technology itself.