Reminds me of back in WW2 when the British Intelligence would put some high ranking captured German Officers in a “prison” that was a basically a comfy mansion. They then put a couple of Brits fluent in German in the mix posing as fellow German Officers. When they were all comfortable, the German generals and Officers would often start getting into bragging wars about their own little projects, and the allies got a stupid amount of info on base locations, vehicle specs, etc. So the fact that a tank commander would leak specs to win an online argument is stupid, but not unprecedented.