I think where confusion comes in, is in the difference between punishment and abuse, and correction or discipline. I would never put hot sauce on a child's tongue .. And certainly NEVER on a babies tongue.. But I don't think a drop on the tongue would kill a 6 or 7 year old just starting to think gutter language was cool either! Notice I said a drop.. Different children require different methods. Something like hot sauce would leave an after taste that would be remembered for a while.. I always treated my children with respect,like people and as individuals ,but I also understood that it was my job to teach them to be self disciplined balanced adults.. With a responsibility to themselves and others. And that childhood isn't only about being a kid.
Correction is a vital part of that learning and growing process. My children knew that if they did something which was harmful to themselves or others they would be warned twice if they still did it deliberately.. They would get punished for it.. I tried never to spank them in anger or threatened something that I didn't mean. I believed that consistency was also important.. They grew up knowing that life is cause and effect.. If you deliberately do something which is wrong.. There will be consequences!
I remember once when my son was two (the terrible two's

) I had taken him grocery shopping .. He asked for candy as we passed it in the isle .. I said no not now maybe later..
That was fine until he observed another kid asking his mother for candy at the top of his voice.. And throwing a kicking and screaming tantrum till his mother gave in
Cameron was a very bright kid.. I could just see the mental wheels turning..
he decided to try that method of coercion

I bent down and whispered in his ear
(he had to stop screaming to hear me) If you don't stop that right now I will have to spank you. he stopped thought about it.. and started again.. so I took him out of the cart
put him over my knee and whacked his bottom a couple of times.. this surprised him so much he stopped the tantrum.. he never threw a tantrum again.. he also learned that mommy means what she says and that throwing a tantrum was not the way to get what you want.. the point is.. it was not something that even hurt physically, it was not something that was done In anger, but the understanding come , the lesson was taught the potential problem was nipped in the bud, and respect for his parent followed too.
My children grew up to be well adjusted, well balanced, independent, loving adults.. Who understood the difference between punishment and discipline... punishment seldom works.. Discipline on the other hand teaches responsible adulthood, and comes from love.