Caning can be devastating if done irresponsibly. Many years ago a guy who was on drugs (I did not realize it at the time) beat the crap out of me. I was out of commission for weeks. I subsequently learned the safe way to do it, but it’s not part of my repertory as dom or sub based on that experience. Remember that the sub is being beaten with a hard thin object that can cut into the flesh more so than a wide wooden paddle or flexible leather slap paddle, which is tne safest of the three to use.
The caning in the video was a bit over the top. However, I say the video was “shopped” to make the redness on the sub look worse than it was. Though while hot it was right on the borderline of entering the realm of insanity.