This man on youtube which channel is called "Metatron" believes certain things about the Ninja and the Samurai that would surprise many people. Here there are the two videos about the issue:
If you list the points from the video you wish to discuss, you'll get a greater response! Also what's the youtube channels background?
@Dead_pool : Ok. Let me specify the points. Metatron believes certain things contrary to what many people think or believe about the Ninja and Samurai. For example: - That the ninja actually weren't a social or warrior class different from the Samurai. That ninja was an occupation or job ( mostly about spionage, infiltration missions ) where some samurai ( and other type or classes of people as well ) were involved.
That's actually true, kinda. The word ninja is quite modern, and encompasses quite a few different terms that all means different things. As a general guide, look at people sources, and don't take two much notice of people's beliefs, beliefs arnt the same as facts. From a quick looks, Raffaello Urbani hasn't a history etc qualification, and is on YouTube for money, so he's more likily to post untrue, misleading videos. Fine for entertainment, etc but not to be taken at his word.
If you want history, books and text sources are more likily to give you direct information that's referenced and clear, youtube videos are not ideal, especially ones designed to earn money, the evolutionary pressure towards clickbait titles and content is unfortunately too strong.