Whilst pilots check the facts about AutoLand light illuminating or not - remember that the aircraft has landed, 'autoland' has happened, but the system has not engaged rollout submode.
Also consider the generic, world wide advice not to GA after reverse selection. Reverse might not have deployed, but if it has then the risk of asymmetric thrust could be greater than remaining on the runway. *
You cite the lowest possible visibility; these are statistically most unlikely (combine that probability with rollout failure) and even so, the pilot should see small segment of the runway.Operations are often limited by 50m RVR because of fire rescue limitations. Thus as the nose is lowered the effective visibility - visual segment increases and there is benefit from 'streaming' effect; in addition there is more reaction time as speed decreases. Actions would be to use max reverse and max manual braking.
* asymmetric thrust:-
https://safetyfirst.airbus.com/app/t...df.php?p=25602