This is the second half of the equation -- proficiency. We all know that flying is a perishable skill, and the more high performance the task, the easier it is to lose proficiency in executing that task.
I mentioned that many of these guys are not "professional pilots" for a reason: they have day jobs, and usually high-powered and high-pressure day jobs. They don't think about and execute flying day in and day out like a professional pilot does. There's a reason the USAF has RAP and "beans" and all the other required continuation training events during the course of the year, and proficiency is the answer (weather RAP is an effective means of doing that is another discussion all together...I mean, do you really want the old attached dude who is alternating between CMR and non-CMR every month on your wing on night 1 of the war?). Civilian guys don't have RAP, nor any other mandatory program to keep them sharp on the non-FAA required items. It is entirely up to their own conscience how much they dedicate to staying sharp, and there are certainly a lot of pilots who don't recognize how much and how quickly they can lose proficiency.
Again, not a spear at non-military dudes -- I know plenty of civilian guys who are great sticks and make sure they spend the time and money required to remain proficient. But, unfortunately, there are also many who do not.