On Youtube this is referred to as propaganda.
prop·a·gan·da
/ˌpräpəˈgandə/
Noun
#1 Information, esp. of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.
#2 The dissemination of such information as a political strategy.

There is often/ generally associated connotation of dishonesty. In this case I believe that common definition/ understanding and connotation are undeserved. Is it still propaganda if it promotes truth?

Look at the bottle the snake oil salesman has.
"ISM"- I see moochers!