Good point, and well phrased.
However, I think that when a scientific advance can do something so revolutionary as give the ability to someone else to take away someone's free will, I think it's significant enough to pause and reflect on whether this is the right direction to take. Perhaps I'm reading too much into the technology. Maybe the individual will still have full control. The way it's written, it looks like people will be able to make decisions for other people, taking away their free will. Having free will or at least the illusion of free will (that debate can be fierce) is something that makes humans uniquely human.
It's the same thing with AI. There are some great advances that are shown to have great potential for benefit, but people like Stephen Hawking believe that AI poses a threat to human survival. At least there, people are stopping to reflect on how science should progress.