The comments suggest this manual is publicly available and this is indeed not classified information. It might be ITAR restricted, but thats a long shot from classified

https://www.flight-manuals-online.com/product/eurofighter-typhoon/

Bit idea: Chinese intelligence agent who suffers from imposter syndrome because his colleagues keep congratulating him on uncovering classified US military documents but in reality he just checks the War Thunder forums twice a week

Okay maybe I’m too paranoid but the wording and tone of that sentence sounds way too fake oblivious and enthusiastic

I genuinely believe this is an op to trick foreign states into believing the Typhoon DA7 is worse than it actually is with the fake manual