If your first priority is judging the author then yes. If your first priority is judging the company, as it is with many people in this thread, then it is less so. In that case, it only suffices to ascertain the truth of the author's statements.

To take a more extreme example, if a mob hitman turned FBI informant blows the lid on the corruption within the FBI, if there is truth in their statements, then them having benefitted from the corruption they are exposing is frankly secondary to my primary focus in the matter.