What we do know is that CH signed a non-disclosure agreement when he left I3, so anything he said in that Youtube video is in fact not the actual reason he left.
Not necessarily.. NDAs are generally about business itself.. personal opinions and fair comment on relationships and ideas are ok to go on and discuss at his pleasure. NDA might have taken issue if he had perhaps revealed some kind of details regarding some trade secret.. trade secret in the business vernacular that is.
I did notice through out the hangout of all the things he discussed.. he gave praise to bitshares on a number of occasions.. and only noted one thing he thought could be done better.. the voting for delegates in our network. That's not news to us.. we all know there is room for improvement but there are more critical functions to deal with now.
CH brought up a lot of things about bitcoin that you could tell in the hangout they did not like hearing. Someone even tried to suggest how 10 years from now people are still going to want to use bitcoin.. but CH shot down that idea.. I can see why they would not like to have him speak at conferences.. it's not unlike why these bitcoin conferences don't want to have bitshares on the scene.