Not sure that applies. When I was a kid most of the spanking was done by my mother. Only major transgressions were deferred to Dad. That meant... waiting.
The thing you never see anymore is a mother swatting an unruly kid in the grocery store. On rare occasions when that does happen the woman draws all kinds of glares.
That’s because the discerning mother knows not to smack her child in public.
I never did it to my children. But, I knew a mother who pinched the inside of her son’s thigh when he was a toddler, sitting in the grocery cart. He had bitten her knuckle. He knew not to do that behavior. He also thought she wouldn’t do anything about it.
She placed her head close to his his, scolded him sternly in his ear, and pinched him.
He let out a surprised yelp and cried real tears with the quivering lip and runny nose.
He didn’t bite her again while they were out shopping.
I understand why she did what she did. The idea of discipline is to stop the behavior permanently, never to inflict abuse or let off frustration.