I read somewhere that "if you go to sleep in a bad, under a roof, with food in your belly, you are better off than 75% of the rest of the world." Videos like these tend to prove that.
The trouble is, the target audience is very small; most who are aware and care already KNOW; most of the THE REST would sneer and say, "Tough sh**, we got problems here!" So there is a small section of the population that would be moved to action by these. (But, a few is better than none......)
I know a few people who would see that, look at me, and say, "SO GO RIDE YOUR M-F'N BIKE THERE!" And then call me "Cracker".........