Ugh. status.marriott.com now makes the following claim:

Lifetime Status

When will my Lifetime status be reflected in my account?
Lifetime status should now be reflected correctly in your account. The only exception is for members who achieve Lifetime status by legacy requirements between August 18 and December 31, 2018. As previously stated, these members will receive notice of their updated Lifetime status in January 2019. For more information on this and other Elite Tiers & Benefits topics, please visit: FAQ ? Marriott Members

But the referenced FAQ still reads as follows:

IF I WILL NOT BE GRANDFATHERED INTO LIFETIME PLATINUM PREMIER ELITE, WILL I HAVE THE ABILITY TO EARN INTO THIS LEVEL IN 2018?

Yes, members can earn Lifetime Platinum Premier Elite in 2018 if they achieve 750 Lifetime nights and 10 years at Platinum Elite status. This requirement is only for 2018 and will not be continued in future years. Members will receive notice of this Lifetime achievement in January 2019.

Obviously the above are not "legacy requirements." Sure would be nice if Marriott would put someone in charge of PR who actually knows the nuances of the program they're posting about.

Just sayin.