Snow and gravel are the only valid situations where ABS can increase braking distance.

However, disabling ABS is still a really poor idea.

ABS increases braking distance in the snow because it allows the wheels to rotate so they can grip the road. ABS allowing your front wheels to rotate is why you have any marginal ability to steer and brake simultaneously. Without ABS in the snow your front wheels will lock while steering before your rears and you will lose control of the vehicle.

On top of that, disabling ABS usually disables the vehicle's entire suite of driver aids like traction control and stability control which are extremely helpful in snow.

I can't think of any situation, however contrived, where I would willingly disable ABS on a vehicle in snowy conditions... unless you were trying to slide a car around.

Note that these are all very niche concerns and I think ABS is a fantastic safety feature, but it's still a compromise to improve the averages. This is true of virtually all safety technology.