IIRC, it's not necessarily the extent of the damage reported thus far, but the possibility of future litigations as the result of more wide-spread damage, etc t

IIRC, it's not necessarily the extent of the damage reported thus far, but the possibility of future litigations as the result of more wide-spread damage, etc that would drive a recall like this. They obviously deemed it too risky to keep the current systems in the field. Not every company is going to wait until the world burns before being forced into making a recall for a defective product.