Certainly not the best outcome but at least it is unambiguous now. Thanks to all those in this thread fighting the good fight to make it happen.
Here's the new T&Cs:
Originally Posted by Marriott T&Cs
B. The Cosmopolitan of Las Vegas participates in the Loyalty Program as follows:
(1) The only charges that qualify for Points are the following: Room rate, room service food and beverage, in-room movies, phone calls and in-room minibar purchases. Points cannot be earned on any other purchases at hotel outlets or for hotel services.
(2) Points may be redeemed for all Qualifying Stays (defined in Section 2.1.d.) at The Cosmopolitan of Las Vegas.
(3) Limited benefits are provided as described in Section 1.3, Section 3.7, Section 4, except for the breakfast option associated with the Platinum Elite Welcome Gift benefit which is not available, and Section 6.4.