No, there is no conscious evasion of responsibility. The person who writes the response thinks they are saying "I will fix it" or "I am telling X to fix it" and

No, there is no conscious evasion of responsibility. The person who writes the response thinks they are saying "I will fix it" or "I am telling X to fix it" and the passive voice is consistent with what they think they are saying. It is just hard for anyone else to figure that out without being mindreaders. This is particularly common in people with academic background, as the passive voice is often encouraged in scientific writing.