I'm not at the place to tell other parents how to be a parent. That shit is hard enough. It takes most of my energy, whereas going to work is a break.
But the kids who need a smack probably just need focused discipline. Like, the smack isn't a get out of jail free card. Every now and again, the kids will try and test. Which means, at least once a month. And you can't bitch out of it. You have to respond and respond effectively. We learned early that if you count to 3, the next time they don't respond, you need to be up in their grill.
You need to snatch them like that Mom did on BBC. You don't have to spank but you need to grip them up, take away privileges.
And every time i spanked or smacked, it was out of laziness and frustration or anger. I personally don't feel like spanking gives me a good option afterwards. What's next after you do full nuclear beating? I say, hold onto to it as a nuclear option and use that fear.
And we need more encouragement for parents. Shitty governments taking away child day care and a parent working two jobs is in a stressful position. There are a lot of forces that want to reinforce old ways, putting pressure on a parent.