Mr Cat, are you sure about that ?
"V1 is the speed at which the first stopping action must be taken in an RTO... (it most certainly is NOT a decision speed)..."
You missed a very key word there is your paraphrase " MAXIMUM ". If you put this word in there correctly you certainly have a decision to make at this point dont you ?
let me take the EASA definition as we are taking bus here, which is pretty much the same as the FAA anyways...
‘V1’ means the maximum speed in the take-off at which the pilot must take the first action (e.g. apply brakes, reduce thrust, deploy speed brakes) to stop the aeroplane within the accelerate-stop distance. V1 also means the minimum speed in the take-off, following a failure of the critical engine at VEF, at which the pilot can continue the take-off and achieve the required height above the take-off surface within the take-off distance.