What you see in the simulator isn't necessarily what you see in the airplane. I've seen airplanes in the sim stop flying and move backward in unrealistic and wild ways during a T/R deployment just after takeoff.
A few knots before V1, you get a light with no other indications...by the time you do something about it, you'll be past V1. The aircraft is fully controllable, still increasing in speed...yes, you'd be very foolish to reject.
Is your aircraft equipped with snatch-back cables that pull the thrust lever to idle in the event of a T/R deployment? Many are. If you have the light and no other indications, and the lever hasn't been pulled out of your hand to the idle stops, you don't have anything in evidence at that stage that demands rejecting the takeoff.
A low speed reject, perhaps. A high speed reject; unwise.