Amongst the not diet conscious I suspect the average calorie intake is more like 2500, with more like 80% from carbs (just my speculation) and that gives us 500 grams carbohydrate. (1 gram carb = 4 calories)
This is nuts for a woman. An Olympic gymnast like Simone Biles likely only needs to eat 2500 to 3000 calories a day, max, to power their elite-level training. Granted, gymnasts are tiny… but still nuts unless you’re running or swimming every day.
I have a hard time imagining how anyone could consistently eat 6,000 calories a day. When you look at lists of what Michael Phelps eats, it basically seems like there’s little time for anything else.