We do often get into discussions about the quality of scuba training and how that should/could be improved or how a few instructors provide a much higher quality of training with increased expectations of their students. My few years of experience with scuba instructors/divemasters and organizations would tend to confirm all of this.....however scuba is the only activity I have participated in where death is a distinct possibility and where a certification is required to participate.
Canyoneering kills a much higher percentage of people annually than scuba. A course, or at least some time with a guide is recommended, but not required.
Winter hiking, skiing or boarding in the mountains kills more people in avalanches each year in North America than scuba diving does worldwide. Again, an avalanche course is recommended but not required.
Backcountry travel in my area of the world results in lost people on a fairly regular basis...some are injured and a couple each year die or are never found. Courses in backcountry travel and first aid are recommended but not required.
In all three of these activities you are on your own....your ability to return home depends on your own skills and knowledge and ability to make good decisions.
Maybe it's time to stop coddling new scuba divers. Make it clear that scuba can kill you if you don't develop and use the required skills. Point people in the direction of continuous learning and practice.....and it doesn't need to be all formal courses. There is a wealth of knowledge right here on Scubaboard.
Most certification courses only get people a few basic skills, a full tank of air and the right to kill themselves if they don't take responsibility for their own safety.