Just nitpicking, but it's not that he said he spends $2000-4000 a month on food, it's that he said he can save $2000-4000 a month so your baseline is not $0 because no matter what, you need to spend money to eat. So what he is suggesting is something like a reduction from $2500-4500 a month to $500/month for food, which is even more than what's been calculated. A daily dose of $5 coffee, $10 breakfast, $25 lunch and $30 dinner would still come out to $2100/month and that's at the high end of things so I still fail to see how you'd get to $4000-4500. Feeding a family of 4 the same way and adding 20% to each bill by using uber eats is the only thing I can think of to get you to that range of spending.
Not to nitpick back, but now I'm actually curious to look at some numbers.
Hypothetical Pre-pandemic lifestyle of young adult in NYC not saving as much:
Weekdays (Daily)
$5 : Coffee + Breakfast sandwich/Bagel/Pastry/Fruit
$20: Lunch (average)
$30: Dinner (average)
$30: Drinks / Happy Hour (average)
_________
Weekly Weekday Total : 85 x 5 =
$425
Weekends (Daily)
$25 : Brunch / Lunch (assuming breakfast is skipped from drinking the night before and sleeping in)
$15-40 : Transit to get to and from dinner / home (Public Transit, Drunk Uber back home, tolls and parking if driving in from outside Manhattan, etc)
$60-120 : Dinner Sat & Sun
$100-200 : Miscellaneous Post-Dinner stuff where food/drink minimums are included to some extent (Comedy Club, Shows, Gentleman's Club (?), Jazz Bar, Dance Club, other social club events, etc)
$100 : Drinks at bars pregame, before or after dinner, or while waiting to go to post-dinner event, or nightcap afterwards
__________
Weekly Weekend Total: (300 to 485) x 2 =
$600 to 970
Monthly Average = $4100 to 5580
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Hypothetical Post-pandemic lifestyle staying home more:
Weekdays (Daily)
$3 : Coffee from Nespresso or brewing own would be even less
$8 : Lunch from groceries
$10 : Dinner from groceries
$23 : Bottle of wine
__________
Weekly Weekday Total : 44 x 5 =
$220 (groceries)
Weekends (Daily)
Same as weekdays
__________
Weekly Weekend Total: 44 x 2 =
$88
Monthly Average = $1232
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How much has been saved from not going out to eat / drink in NYC? $2868 to $4348
Of course there's a lot of room for variation depending on the individual, but this is estimated mostly on my own (younger) experience and what I've seen in a similar demographic in NYC. Obviously some people don't drink or some people do more dollar pizzas and halal platters than others, but some people also spend considerably more depending on their habits - some might be willing to drive around for 30 mins looking for free street parking, and someone else who took public transit in from Brooklyn or Queens might end up with a $50 drunk Uber ride back. I don't know if Sparda would find this estimation close to his/her younger life expenses, but I would venture to say yes if they've enjoyed Peter Luger and Delmonico steaks enough to know his/her own tastes better. I can relate to the amount of savings even with a non-zero baseline - a night out to Peter Luger's is easily 160+ when you factor in having a drink while waiting for your table (even with a reservation), appetizer, sides, steak, wine, plus a decent single malt scotch to finish. I've groaned inside when at certain steakhouses, a friend goes and and orders the seafood tower to start off. And frankly, groceries in Manhattan end up costing more and the people frequent places like Whole Foods instead of ShopRite...so even estimating a monthly grocery bill of $2000 still leaves you with considerable savings from not going out to eat/drink in Manhattan (and going for a run in Central Park instead).
So to new grads - enjoy life but realize there's a LOT of life left after your 20s and 30s. Don't go overboard in giving up life's joys thinking you'll postpone travel and eat good food in later years because your 60 year old body most likely won't be able to travel or eat like your 27 year old body. At the same time, your 60 year old self will need some security (in health and wealth) in place and building that security starts NOW - really, not 5 years from now...but now.