I'm not sure if I buy that. 1 Enoch has a very strong theme of judgment re one's works; particularly in the description of Sheol and the division of people by their deeds, and also the description of Judgement Day. But that does not directly address responsibility per se. It is remarkable, tho, that like Jubilees, 1 Enoch presents the animals as having sinned and being corrupted by the Watchers, thereby justifying the destruction of seemingly innocent animals at the Flood -- tho that could still be simply viewed as a cleansing of corruption.