Hope it goes to trial
If this superstar rainmaker salesperson settles for a replacement 401k (i.e. a few million) from IBM, then unfortunately the whole case will get swept under the rug like all the other settled ones. Here's hoping he and his attorneys are willing to go the distance.
Age discrimination is going to be a killer, especially as automation and AI or whatever starts killing knowledge work. We're already being expected to work longer and save more money...but if companies are still in love with the abusable new grads by the time we get laid off never to find work again, that's not good. I've seen lots of people laid off in their 50s, years from any ability to access their retirement money or social security, with zero interest from employers for even basic work. Extend that out to more and more people competing for fewer jobs -- allowing companies to have another reason to reject people won't be good.
What we need is an enforceable law, with real teeth, that can't be watered down or worked around by companies through surreptitious means. Settlements don't set legal precedent because companies can just "admit no wrongdoing."