A lot can be said about the drives behind the act from Jamie Demon (Ooops Dimon I mean).
Of course there will be a lot of hidden agenda's... but I think the main reason that made him say that stupid statement again (also in 2011 and 2014)...
was this time really personal! Not business, but a family thing!
His daughter bought Bitcoin ;-) And this makes him angry...
And this is why he did loose his ratio in the debat.... ending up saying it's a fraud... instead of making a really good argument of the problems that bitcoin is facing today.
So... he acted as a fool. And that is a good sign for BITCOIN :-)