Have you ever seen those videos of guys shooting sub-second from timer beeps to first shot from various positions? It looks cool and some people even think that it is an achievement of some sort to do that, and they are half correct.
The fact is that once you are taught the proper formula to develop any skill set, given enough time training that skill set you will be as proficient at it as the formula allows you to be. So sub second buzzer to shot times are possible for everyone if they have the right formula being applied. If they are not then they may still achieve that level of competency of that particular skill set though it may take longer than someone else who is applying a better formula. Your goal should be to seek out those formulas.
Also do not shoot faster than you can think. Having a sub second shot from the holster may not be applicable for you or others so holding yourself and others to that requirement may not be accurate.
There is an old adage in the gun world, "the gun is waiting on you" meaning you are not using the gun to it's full ability because you are too slow or not doing something which is required to run a gun as fast as it can be run. The same principle can be applied to your shooting ability, no matter how fast you can shoot your gun you are always waiting on your thought process, and you should strive to not outshoot your ability to think. We do this often when we run predetermined drills or courses of fire, we already made our minds up as to the shooting and now we wait on the gun.
The most applicable training to the everyday life of a conceal carrying responsible armed citizens or LEO has to do with thinking and not shooting. The caveat is that your shooting ability needs to be at a certain level so that you can think about what actions are required and take them instantly without hesitation due to lack of confidence in your shooting ability. Never outshoot your thinking and never outthink your skillsets.