It's not a question of having a view of meaning, it's having the view that meaning is not merely a view, not merely an opinion. Imagine you're Pinocchio. You're a bunch of matter which has come to life, become conscious, self-aware and intelligent (which is in fact what you are). Either you've been made that way by another intelligence, in which case there may be a reason you were made, a meaning for your existence. Or, there is no intelligence which created you, in which case no matter what happy fictions you dream up, there can be no actual meaning to your existence.
Well if you look at it that way then everything leads to nihilism. Which is how the old atheists (like Nietzsche, Bertrand Russell, Mark Twain) looked at it, and I think they were honest. They recognized the gloom and despair of a godless universe, whereas the new atheists try and paint a happy face on it by saying "just get rid of religion and science and reason will lead us on to a brighter future!" Yeah, right.
But blaming it on Christianity is weird. The only kind of idea which doesn't lead to nihilism leads to nihilism only if it's not true. Kind of like saying "if my car doesn't run I'll have to walk, therefore cars make people walk".
There is a Christian worldview we can speak about. If there's no atheist worldview that only proves my point, because if atheists had some meaning to agree on we'd probably be discussing it here.
I agree it was never set in stone. One, because he sometimes gave contradictory ideas, and two, he was vague (which is one aspect of him that G. K. Chesterton attacked). Then you add to that he sometimes opted for an unusual writing style involving word play which doesn't translate well in English and can be confusing, and all that stuff combined makes him difficult, or possibly insane. But if you want to talk about some other aspect of him go ahead.