Crypto suffers from severe scruples.
An occasional expensive meal would not be gluttonous, but regularly insisting on extraordinarily expensive food would be. Spending extra money for, say, organic food would not be gluttonous because it's done for health reasons (which is actually the proper end of eating).
Even conceding whatever issues he may have, I think the OP does indeed make a legitimate point, as do you. Let's say you can afford to eat the absolute finest food for every meal.
Should you? Or is it better to eat more simply, again, conceding the occasional expensive meal, but otherwise eating humbly but nutritiously? Would that money you spend on fine food be better used to help the poor, or to donate in support of the Traditional Latin Mass (especially someplace that could use the money)?
I eat simply out of financial necessity. I buy everything I can at Aldi, and most of their food is of good quality, a few things are excellent (their bacon, eggs, and hot dogs), and some of it is not fit to bring out of the store (their pork schnitzel is best described as fried cardboard). But even if I were wealthy, I'd still shop much the same way, because nobody ever got rich (or stayed rich) by wasting money. Our Lord pointed out that it all ends up in the privy anyway.