To support just how inaccurate RPGs even when wielded by experts.
Slide taken from the AAR of the Force Recon Platoon of SPMAGTF Helmand. Over 100 RPGs fired, only two Humvees hit, only one of the two disabled. Zero casualties. And let me reiterate that these are people who have been fighting for around thirty years continuously. They have fired more RPGs at real targets than a career soldier in the Soviet/Russian Army has fired at practice targets.
Yes, the enemy fires dozens of RPGs for every hit. And they generally need multiple hits, even on Humvees, to get a kill. It's been that way with the PG-7, PG-7VR and OG-7 hits we've recorded. None of them is reasonably effective at killing anything beyond a very unfortunate individual struck with them, the softest of soft vehicles (i.e. non-armored humvees) or their operator's when they expose themselves.