Out of curiosity, do ANY of these "I'm going to light myself on fire" videos end well? It is possible that we just have a strong idiot bias and only see the good ones, but I doubt it.
1. Any self immolation video where the subject has the presence of mind to keep a fire extinguisher handy would not gain any popularity due to lack of sadistic entertainment value.
and 2. Anyone with the sense to keep said extinguisher close by also has the sense not to set his ass on fire and record it for all to see.