You should practice both well aimed shots and combat shooting. Both are necessary skills.
Maybe we just have to agree to disagree. I see no long-term advantage of a ‘spray and pray’ method of shooting.
It goes to the original question, “What happens when the ammo runs out?”
I do not see myself as Bat Masterson or Wyatt Earp out to quick draw myself to safety. I think that enables me to focus more on situational awareness and tactical positioning.
The bad guy can take me out in the first 20 seconds, but if I survive that, I think I will be just fine. Meanwhile, I do not present a threat for those 20 seconds (deep concealment) so I think that initial survival will be quite possible.
People have to know their limitations and be prepared to respond accordingly.