I think those videos are a poor misrepresentation of what someone extracting oil does..... In the first video they are heating up a pyrex dish with no liquid in it over an open flame, while passing a cigarette multiple times over the alcohol. It didnt explode, though. The Pyrex dish on the stove had cold liquid poured into an incredibly hot empty glass dish. The glass was mistreated *and* the people are morons.
The second video more shows how *safe* it is, look how slow that pan takes to burn and how small the flame is. Easily controllable.
Cant blame stupid people, its only as safe as the people making it