Back when Andaz was new in London, I had a few stays there as a Diamond. Its minibar offering was appreciated by me a bit, but it was such slim pickings most of the time that I would just say the following: "talk about the hotel going cheap!"
Hotels engaging in the green-washing of their cost-cutting measures has been followed by hotels engaging in health-washing their cost-cutting measures. Maybe Andaz can say they don't want to encourage snacking since they think its healthier that people only eat proper meals at fixed meal times and just eliminate the "included minibar" aspect of Andaz stays.