And yes, I have been in a situation where my merit as an engineer was called into question (I'm sure most engineers have). At the time I felt that the assessment was unfair. However, even if it had been demonstrably, objectively unfair, it would be incorrect to call it aggressive unless the intent had been to cause or threaten physical or psychological harm.
Aggression is an accusation that hinges entirely upon intent. Even an act that actually causes physical harm is not aggressive unless the intent of the perpetrator is violent or hostile. Similarly, even a memo that actually causes psychological harm is not aggressive unless it was the intent of the author to inflict that harm.