I don’t know whether you know this, but ABS is not
supposed to improve / reduce your stopping distance.
When your wheels lock up, the car skids, then you lose the ability to stop and to steer.
It is supposed to allow you to continue to steer under hard braking. It is an electronic implementation of Cadence Braking
ABS prevents the wheels locking up – when the rotation stops, the brake is released – wheel starts rotating again, the brake is applied. This cycle continues as long as the brake is applied – this is what causes the drumming sound and feeling in the brake pedal.
Because of what ABS does, it will worsen / increase your stopping distance.
If you want to make a stop in the shortest possible distance, then you need to use Threshold braking
this is perfectly possible in a car equipped with ABS.
Because of this, the last thing you should do in icy conditions, when you need to make an emergency stop, is stomp on the brakes as hard as you can and hope for the best.
By all means, stomp on the brakes as hard as you can, but then you need to steer around the obstacle.
You want to disable the ABS? Really bad idea.