I think a few valid points have been missed here.
The sole purpose of providing in-flight catering is to ensure that crews remain alert and blood sugar levels stay high, this includes the possibility of prolonged holding and an eventual diversion, if everything goes according to plan then it is highly probable that there will be food left over, equally it is possible that if major delays and diversions occur that on board food will be much appreciated in keeping alert levels high and saving the multi-million dollar airframe.
Sadly the Powers That Be have come to the conclusion that if you work on the ground then you are expected to be in attendance for scheduled meals or have an opportunity to self cater, penny pinching at it's worst as ground crews work shift work and not 9 to 5, just shows how little the
PTB know about how things really work, just shows how little your Lords and Masters have bothered to make them aware.