I have been MGM Gold for 3 years do to the Hyatt matching, and have really enjoyed the free resort fees in Vegas and free valet parking at the Borgata. Using my meager casino comps was a lot more palatable with the zero resort fees and made me actually go to Vegas more (and gamble more!)

I had convinced myself that Marriott Platinum would match to MGM Gold and was getting ready for to sign up for the Brilliant Card, but obviously all of this hype and delays was for nothing.
This partnership really makes no sense for either side. I can't imagine to many gamblers are going to pay 100,000 Bonvoy points to stay the Aria... and then pay $60/night in resort fees, especially cause the MGM comps will still work for gamblers.