When I was a boy we had a craze for collecting match book covers (pleased to say I have now recovered) and my American Godfather sent me a box - by mail - containing around five hundred covers with the matches still in them. The box was held by customs and questions were asked that resulted in my father and me having to go up to London and visit the customs people and the American Embassy where we had to add our sworn statements (or his, I guess) to one that had already been extracted from my Godfather that these were for collecting purposes and that there had been no intent to commit arson. I don't recall the term 'phillumenist' being used in those days.

Incidentally, I assume the self-burner you describe was not a Philippino philumenist. Was he philosophical or did he sing out like a philomel?