Have you ever noticed how often people use agent-free verb forms like “past” participles or the passive voice to avoid putting their own reputations on the line? As in, “it got broken” vs. “I broke it?”. Or “so-and-so is a trusted/respected journalist” vs. “I trust/respect so-and-so, and here’s why I think you should, too.”
Sometimes going agent-free, or de-emphasizing the agent, makes sense. If your best friend is in the hospital following a car accident, the fact that he/she was injured probably matters more to you than the question of who injured him. But in most cases, it is believed by me that the passive voice should be eschewed by all.