my last special Gluten Free meal in J on MH - SYD-KUL was atrocious.  tomato passata on everything, it was a mixture of chicken dishes with tomato or vegetarian...............it was awful.  i did it as a sort of experiment to see what it was going to be like.  coming home MH  KUL-SYD, in J, the FA said, 
"oh you're the GF person, oh i've got bad news we don't have much of a meal for you, but we do have the rice cakes............." i was so relieved, i said "great news, as the GF menu was disgusting anyway"  didn't have any reaction to the meals, and had the rice cakes instead of bread, which is what i normally do anyway.
can understand when sometimes have not had GF meals due to late upgrades, but one time when flying QF PVG-SYD in Economy which had been booked for months, they had no meal for me.  i had rung 3 times in the proceeding weeks to check, even with it being as part as my FF status.  double checked on check=in at PVG, "Yes Ms KLN, we have the special meal for you"...............absolutely nothing.  had a couple of cold prawns and lettuce. i told the FA, "just bring me a couple of bottles of wine, and i'll be asleep soon".