The problem with calling these all training issues is that, newsflash, not everyone has access to infinite amounts of time, money, and training. Mortals need to balance their resources. That’s true for individuals, police departments, the U.S. military, and every other entity that deals with shooting.
Goes back to my recurring theme that some are more interested in selling you a class than actually making sure you can do your best.
Get training, nobody is saying the opposite, but those who train for a living have to understand people do have lives outside the range and a budget. If you can’t understand that, then you are not training people for Real Life.