The reason for the bad review is simple -- Dr. Bergeron had the audacity to exhaustively research and write the truth. Unfortunately, truth doesn't count for much against political correctness.
As for re-writing history, what's wrong with that? I always thought that was the purpose of historical research. If the rewritten history is accurate, then a great service has been done.
Dr. Bergeron is a researcher and historical author of the highest caliber, who meticulously documents his work.