What specifically makes you think this?
I guess just reading what he said in the post and the referenced article. I blame the museum completely for what had happened, because if it was not this guy, it could have been children playing that broke them.
But still, if I had broke them, I probably would try to sound more remorseful, and would not say things that would appear that I laughing about it inside of me. sorry, this is the impression I got.