While it's worth noting Hari's previous problems, deciding to simply not give him the time of day is black-and-white thinking. His current work would better be

While it's worth noting Hari's previous problems, deciding to simply not give him the time of day is black-and-white thinking. His current work would better be judged on its own merit (with an eye to possible issues based on the author's previous issues) and not summarily dismissed.