Yes, AFM came up with that conclusion when we looked at Venezuela and the capture of Maduro. Needless to say it wasn't just a lack of proficiency on the Russian systems but it contributed.
Kuwait was the recipient in numerous sales supporting its Patriot PAC-3 capability. Its worth asking once again, how proficient local operators of a lot of fancy military gear really are. Recall the downing of three F-15E on March 2 by a Kuwaiti F/A-18.