Thankfully not my experience at any IHG, Starwood or Marriott and a very new experience for me practically at Hilton. I am finding Diamond benefits getting thinner and thinner (as a 15 year+ diamond) ,in the UK I am typically finding no room upgrades, a drink voucher and little else behind breakfast which often starts after I need to leave.
if diamond really has now come to one free drink and a single bottle of water per stay and an average breakfast daily then it's a pretty sad state of affairs. It makes the brand seem pretty weak compared to the better competitors,