Oh they will definitely regret this. My SIL would spoil the kids buying for example 2 new outfits for my niece when she was 3 for NYE so she could "choose the one she liked best" and I'd just
at the time.
Now, she has a 14 year old that threw a fit here at my home cause she could only buy 1 pair of new expensive sneakers on our credit card (her mom will repay us, but she'll do so in many monthly installments, therefore tying up limit on it). She wanted a second pair, and it was gonna be "Only 12 a month!" (over a year...). When we explained we had no limit, she called her mom, asking her mom to send us cash. Her mom didn't have the cash, so she called her grandparents, then her father, then - what shocked me - her boyfriend
asking if he had any Christmas money leftover to transfer to us so she could buy the sneakers.
That right there is your friend's future.