Saved I don't think this video was meant to persuade people that christianity is bad or that religion in general is bad, but rather to express a realization of the situation this artist felt forced into, and the feeling that emerged at this realization. Kikoshou, I don't feel this is propaganda; propaganda is made to persuade, as opposed to being made to express. It isn't so much a logical/intellectual message as it is an emotional message, as he is trying to make the audience feel how he felt. In this way, Kikoshou, I disagree with you, as I believe that he was very successful in creating the necessary imagery to show the audience how manipulated he felt all throughout his life.
In short, I believe this was a work of emotional expression, not propaganda, though I may be wrong.
There She Is!! step4