Now that I'm trying to cut down on carbs (which I view as the root of most diet-related health problems) I agree with you, "real" food like veggies, meat, dairy, etc., are always sparingly doled out by restaurants while they try to stuff you full of bread, potatoes, rice, and all the other cheap filler carbs. It is actually very difficult to cut down on carbs in restaurants and still get enough calories, without ordering multiple entrees and discarding the empty calories.
I see the 7 patty & cheese burgers and wish they still did those. You're getting a lot more real food for your money.
I haven't been to a S&S since the COVID lock-downs started, but I'd give odds that they do still do those. At some locations, off the record, and depending on the manager.
How? Thats like 2k Calories for less than $10