DL switched to using "Complimentary Annual" instead of "Lifetime" for MM status back in 2003. The language change was almost certainly done out of liability/lawsuit concerns, but a number of FTer's were certain it meant the end of DL MM program was imminent. Given that it's been 20 years now, I'm not all that worried about losing my DL MM status (not to mention the fact that the DL MM program is already among the least generous).