It’s the best financial advice, covid is the marketing keyword to remind you, if you don’t spend every last penny in the wallet, you can never have a chance to spend that again. Spend until you drop you plebs!
But there are a lot of people that do not see money as an immediate commodity, but something they will leave for their family they leave behind. Sure, if one is completely alone without anyone to inherit that, then yeah, I guess you could look at it that way, but then again, you could leave some of it to a charity and do some good after you are gone, so it really depends what type of person one is.