Another thought I've had one this topic of late - By offering this recall, it does offer some liability insurance to Remington. If anyone ever gets hurt by an AD using a Walker trigger in the future, if they haven't upgraded according to the recall, then Remington is absolved of liability.
Considering the cost of subsequent lawsuits and the growing settlement awards over time, it's only logical that "the next time" will cost Remington more and more with every iteration, and in our day and age, it's certain that more and more lawsuits will come to bear as accidental discharges happen. So Remington can consider this settlement - a measly $4 per rifle - as an investment in future liability avoidance.
So right, wrong, or indifferent, it does give Remington an out.