The problem with your example is that studies have shown that texting and driving results in similar and sometimes worse results than intoxicated driving.
There are no such studies showing accident rates among constitutional carriers, or licensed carriers in states such as Georgia (no training requirement) having higher accident rates than carriers in states that have training requirements.
Carriers, not just owners...
Also, given that depending on whose numbers yoou believe, when guns are drawn for self defense, they do not even have to be fired between 70 and 90 % of the time.
Do I like training? Sure. I have had quite a bit, much of it voluntary. Do I recommend training? Of course.
Do I think requiring training is reasonable? No. And I will not, until you can justify it with concrete fact, and not just logic.