Could be, but it seems like it's more than a training issue. Keeping in mind, we're talking small, portable drones here. This is a pretty good summary of the WSJ article:
American drones turned out to be ineffective and did not help the Ukrainian Armed Forces at the front, - WSJ - Ukraine Today .org
"Skydio CEO Adam Bry admitted that his drones were useless.
The publication [WSJ], citing Ukrainian authorities, notes that American drones are fragile and unable to overcome Russian jamming and GPS disabling technologies. Sometimes they were unable to take off, complete the mission, or return. American drones often cannot fly their advertised distances or carry significant payloads."
Some additional perspective re: the WSJ article I posted above per an earlier Op piece:
https://www.wsj.com/articles/ukraine-war-drones-dji-china-america-80a1e1f9
"Seth’s Cropsey’s “
Ukraine Needs American Drones” (op-ed, Aug. 7) aims in the right direction but misses the core problem. U.S. companies don’t mass produce the cheap, expendable drones Ukrainian troops need. Since these firms sell to governments and business customers, their advanced drones start at around $16,000.
U.S. defense-tech firms have spent months testing their drones in Ukraine, but some now leave their drones in storage because they couldn’t perform perfectly in Ukraine’s harsh battlefield conditions. U.S. firms don’t have a mass-market consumer drone that costs only a few thousand dollars, which is what Ukraine needs to replace DJI’s Mavic-3, the ubiquitous Chinese tool on the front line. The Pentagon or Commerce Department could encourage U.S. firms to enter the cheaper drone market, but they can’t buy drones that don’t exist at scale."