Bold claim, got a source on that?
Its fine to disagree with the quality of his work, and its fine to say you dont find him reliable. I would just ask if you know he is not technical, and have evidence that he does not verify sources I would be interested in seeing it.
Also by not verifying sources, what do you mean, does he not check that sources are who they say they are or does he not verify the information being provided with other sources?