I believe the DHS linked to a video produced by Underwriters Laboratory. They basically put out a press release and posted a few Tweets about this burning issue. In other words, they didn’t spend much, if any, government money.
That said, the idea of three or four gallons of boiling vegetable oil scares me, especially when it’s in an unstable container atop a propane fire. So I’d never do it.
Look, lots of people are really really dumb. Half of them have below average intelligence. Yes, if everyone were smart capable adults then we could do away with all sorts of things. Except lots and lots and lots of people are antisocial retards. So we can’t.