Dan...as my mother always said...'there is no right or wrong, but there most definitely is OPINION.'
Never a truer word spoken. I believe that you mean well for your dog, and that you would never use cruel techniques....if it works for you and your dog, then it's good.
However, there are people who have expertise in these areas, and they naturally believe in what they are doing too.
Try to take the emotion out of all this, and have a go at what is being suggested.
Xxx