The purpose of SIMS training isn't marksmanship or even gun handling. They didn't start out as a basic handgun training aid for those who don't have ranges to shoot real pistols. It's just morphed into this qualification substitute.good for those who want to skip a day of shooting and don't really want to learn anything.
I think the place my buddy took his course, if you fail the first 25 qual, you can try again, but you have to pay an extra 30 bucks. It's expensive.
What it really trains you is malfunction drills. That is if you are using heavily used and not totally cleaned pistols. Nothing like trying to clear one and reload as you are getting blasted. Especially when you are wearing a mask and sometimes gloves.
It's a tactics training aid. It allows for a 2 way range. Force on force is a valuable tool to teach you to stay in the fight even when you're getting peppered by rounds. So you can actually feel something. You get to actually pull a trigger when you are slicing the pie or going up a stairwell. I never understood the point of teams doing scenarios while wearing their full kit of ceramic plates and such. It's not good enough in the AAR to just see where you got hit.
I compare it to finally getting used to brass from the shooter to the left hitting you while on the range. After so long, you just get used to it and it doesn't affect your shooting. Earn your welts.