Very true although I have to say the food offering in TG C lounges has slightly improved recently .
Last time I was in a C lounge they had sweet and sour chicken , and pad Thai noodles,along with spinach and cheese quiche , all in all not so far off what you will find in HKG , although choices were more limited.
It still is no excuse for not having any wine in the C lounge when almost every other airline's C lounge in BKK does have wine, if not champagne .
Sure does make TG look cheap .