Maybe "lie" is strong as the statement is technically true, but it is disingenuous to say the least to use it as a reason to discontinue MAGC. Read the full statement:
The global pandemic is affecting the preferences of all guests staying in our hotels who are increasingly choosing to forego daily housekeeping to limit contact during their stay.
In many cases when guests request housekeeping during their stays, it is to tidy up the room such as making the bed and replacing towels which can often now be requested via the mobile app.
Yet, among members the overwhelming majority do not choose the Make a Green Choice option, so the program is being discontinued. It is important to reiterate that all guest rooms are deep cleaned between stays.
Marriott is trying to make the case that the "overwhelming majority" of guests both: (1) don't want housekeeping service, and (2) don't wan't the bonus points for forgoing housekeeping. That is patently nonsense.