It's an interesting one; as I understand it the recall contract essentially states that if the crank is inspected and found to be failing it will be replaced.. while if it's found to be "OK" that absolves Shimano of any future responsibility to replace it should it fail in future.
Makes me wonder how this stands relative to consumer rights re. goods being fit for purpose if a crank that passes inspection subsequently fails and converts the rider into a vegetable.
I used to hold Shimano in really high regard, however this has really knocked them down in my estimation (for what that's worth), along with their unerring subservience to modern manufactured fashion at the cost of reliable, accessible, old-school tech.