You must be as dumb as the MC. If a photo is all it takes for you to believe a completely Russian fluent blond haired blue eyed guy who strangled you randomly, shot you with war weapons, coincidently looks good among villains, known by the police even though he's a spy (etc etc etc) is actually your ally spy from another country meanwhile a guy who treats you with respect is the villain you are goddamn stupid.
Before telling people to use their brain go buy one idiot.
He's straight up stupid and you are too. He literally recognized it himself and listed all the situations where he could have guessed that there was an incoherence.
And the fact that at some point he asked his friend to investigate who Zhenya actually is proves that he could do it all along he simply was to stupid to question things.
Whether his superiors did this on purpose or not has nothing to do with whether he should have seen something was fishy or not. He could have and should have questioned Zhenya's identity long ago. Not everyone is blind and stupid like you, brainlessly believing superiors to your death even when things make no sense.
,"why didn't you reveal your identity earlier? " he tried, you fucking brainless imbecile. MC is such a dumbass jesus