To a degree, products like this come down to riding style. Most everyone is occasionally guilty of leaving a turn signal on longer than needed. However, every single person with 'self canceling' turn signals is guilty of doing that every time they turn. This product may be more responsive than others, but I'm not a fan of self canceling turn signals. Rider training and muscle memory do a better job, IMHO.
My wife's '16 BMW GSA has self canceling turn signals, as did her previous F650GS twin. With both bikes, her signals are on well past the turn and often past the next driveway or intersection. I see traffic reacting to her signals, then confused when she doesn't turn. More than a few times she has been cut off or almost cut off by people expecting her to turn an wanting to cross her path, then she doesn't turn and they slam on the brakes. (at least they saw her)
In the US, so many riders ride so little that they don't develop the muscle memory for this aspect of riding. I'm not sure this type of product is really helpful for that, or just a placebo.