While I get your point, it didn’t read as supportive to me. To me it read as a statement of “this is what I observed” not “this is my judgement of the kind of person he is.”

Like if someone asked me what kind of person a coworker was. If my answer was “I saw them do their job” it can be a factual statement of my experience and really, isn’t necessarily helpful. It just means I didn’t witness them doing anything bad.