The thing is I don’t think there is any concrete evidence for us to positively conclude that it was Bernie who came up with the opening riffs for all of those songs. I’m not saying he did or he didn’t - I'm just saying we don’t know for sure. Just because Bernie played those riffs doesn’t necessarily mean he came up with them. While I agree that everyone is free to assume and believe whatever they wish, to me there isn't enough information available to declare it as fact.