Data Point :

I renewed plat ambassador in June without 20K spending yet and got ambassador till 01/20 (even before the merger, was the information and didn't change).
But as all of you I see this message about 20K spent but the amount 18k of official spent is not logical with the screen.
Quite surprising that marriot didn't planned things and made screens and logic for all those scenarios. Information are not accurate and quite confusing, agree with all of you.