If a tool isn't inherently dangerous to operate, no training is required to use one without injury. I don't go off saying that scuba diving isn't dangerous because I'm trained to do so. Because I'm trained to do so I KNOW it's dangerous. I wear safety equipment when downhill mountain biking, or when climbing, etc. Why? Because they're inherently dangerous activities.
I don't understand the whole point of trying to whitewash an activity as 'completely safe'. Unless you're not using the equipment. Then sure, it's "safe".