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 your plebs!
You're just trolling, right? Because if not, this is the worst financial advice I've ever read.
If you're single and don't have any other plans this still isn't applicable, since we need to survive daily. If you're too scared that tomorrow will never come, what's the point of existing at the moment in the first place? Everyone has their own timetable in life. If others came sooner than expected, it doesn't mean yours would too. It's a 50/50 scenario since nobody is certain that he'll still wake up the other day, but you aren't still sure that tomorrow will never occur.
So I suggest living your life, while also being responsible. You can enjoy your life without sacrificing your future. Save and invest, if not for you, do it for your loved ones that you'll leave behind once your time comes. You can pass your wealth onto your family line that will help them to start from something if ever for example they wanted to put up a business. That way, it'll be easier for them to establish what they want.
This mindset is scary because it screams selfishness. I hope you realize that. Spend wisely and don't be so impulsive. Time is short, you can still make the most out of today without putting your next days at risk because of a one-day millionaire mindset.