I would say 'Incompetent' with fair certainty.

I have personal experience of Gox f*ckups - fortunately these were resolved and I didn't lose BTC, only some sleep - that strongly suggests gross incompetence.

On the question of deliberate fraud, I would say innocent until proven guilty and, in my opinion, probably innocent.

On a question of criminal negligence - eg. lost the keys for the cold wallet etc. - we simply don't know enough yet.

Perhaps the more serious question, going forward, is how will users of Bitcoin ever come trust any exchange given the apparently continuous string of exchange collapses, closures, hacks etc. that we have seen.