Irwin Allen UNMASKED
In the entry for THE STORY OF MANKIND in THE FIFTY WORST FILMS OF ALL TIME of Michael and Harry Medved, IA is quoted as saying that telling history on film is like telling a bad joke twice, and that what you need is a gimmick.
So now you know why Allen treated history in such a gimmicky goofy way; he simply could not conceive that anybody would be interested in watching historical events and historical characters depicted in a serious and respectful manner. Irwin Allen was an Inane Ass!
God is subtle, but He is not malicious. (Albert Einstein)