If it didn't use final guidance, it's a fantastic CEP, 200m being considered the best the Russians can achieve. If it did use final guidance, it proves it works.
Doesn't mean it will work against a moving target using counter-measures, but it shows they're getting there.
Agreed (although ISTR some of the US stuff has a lower CEP) but the harder part is actually maintaining a tracking solution post-launch.
Point on fixed targets still stands though. If they can do that for a small moving target, how difficult is it going to be to fit shorter range BMs with a similar head (or GPS) and trash bomb farms, fuel farms, runway intersections?