The site in question is filled with false stories, including the “ring around the rosie,” equestrian statues, and “rule of thumb.” Those are just the ones that jumped out after viewing the site for 30 seconds. (There are others that jump out, but I’d want to be sure of my facts before denouncing them.)
I’d put no stock whatsoever in anything that appears on this site. The editor of the site states:
These are all things I have learned accidentally during research, from the History Channel and/or PBS. They may, therefore, be considered coming from reasonably accurate sources, but are not guaranteed to be 100% accurate. They are provided for entertainment and the useless trivia portion of your brain.
He’s using the History Channel as as an authoritative source. Nothing more need be said.
(The History Channel is a USAan cable channel that features documentaries on historical subjects. The quality and accuracy of the programming is very uneven--most of the programs are independently produced and there is no evident fact checking or peer review by the broadcaster. One should not take anything broadcast on this channel as true without independent verification.)