People who believe Bitcoin is a Ponzi are usually not willing to pay attention to a single sentence response disproving their statement, much less watch a full 4 minute video

This, some people just don't wanna listen. More fool them and unfortunately thats an attitude that a lot of people have to general things in life.
I generally give up after a few trys, they'll come around at some point and if they dont its no real skin off my nose.