I wasn't aware Hyatt devalued the program recently, but I only started regularly staying at Hyatts roughly 2 years ago. When did this last devaluation occur?

For me, I'm not thrilled with Marriott's program as it requires 75 nights to reach platinum status. Also, from an earning/redemption perspective, I don't see much difference between Marriott (40K points for top tier hotel nights) and the newly devalued Hyatt program (22K points for top tier hotel nights), especially considering the GP program offers a wide variety of bonus point (and free night) promotions. I guess what remains to be seen is if Hyatt is as liberal with promotions moving forward as they have been in the past.