Devon, sterilization might indeed be needed if those unfitted for survival manage to pass on their scrambled genetic material before natural selection removes them from the shallow end of the gene pool.
If you seriously read Darwin, you discover that what is required for biological success is reproduction and the survival of offspring long enough to in turn reproduce, before they also die from the inherited tendency to solo dive. Darwin is frequently misunderstood in our dumbed down culture.
I'm a member of that unfortunate population of solo divers. Like others, I solo dive with a depth limit of 10 or 12 meters, not an issue for the inlet and beach dives that compise most of my diving activity. I've managed to survive 40+ years of solo diving. I've seen a couple of scuba fatalities, and know a great deal about a few more. None of these fatalities involved solo diving. In fact, it would not surprise me if there was a positive correlation betwen the number of divers involved in an incident and fatalities.
Being retired, I dive in the tropics frequently. There are very limited opportunities to solo dive in most resort areas these days, so I have no choice when on holiday but to dive with fools and arrogant frauds, and the tourist divers these divemaster/instructors shepherd about.
I suppose if they are really going to issue certifications for solo diving I might be able to pay someone with more experience than I have with solo dives to explain all the things I need to know, and to raise my awareness of my limitations. Meanwhile, I'll make my usual offerings to Yemanja and trust in the dark goddess.