The bigger problem is that if AARP remains successful, the logical consequence is that fewer employers will offer any retirement medical benefits at all, a result that is not likely to be in the interests of most members of AARP. The Blue Cross, Blue Shield Health Issues website has a good overview of the the problem, AARP's Daunting Dilemma.
The only solution that would seem to solve AARP's problem would be to mandate employers to provide such benefits; an idea whose time really has not come. If anything, it appears Congress might step in on the side of business and the EEOC to trump the ongoing AARP litigation. In many respects, it does seem to be a basic policy decision, which in my view makes Congress the place it should be resolved.