Otherwise...you could find yourself in a situation where other people download and then re-upload your video to different places without your permission. Then...if those videos go viral, you will start getting gray hair trying to figure out how to deal with it, because maybe the first video you put up isn't precisely the one you wanted everyone to see.
In the words of Forrest Gump... "That's all I've got to say about that".
Thank you to those of you who took the time to read this initial post and offer your advice. I'm still trying to figure out how to get some sort of control over this situation.