Since camber does add lift, if the plane is very agressively balanced and if the hook is back I suppose that added wing camber contribute to a tendancy to pop off on a very agressive launch. However, on a properly balanced and trimmed plane launched at something under 45 degrees, I would not expect camber to be an issue. But I have never tested that so I could be wrong.

I think wind can influence pop-offs as you now have a highly variable factor in the launch. Exactly when and how it would promote pop-offs I can't say. Again, on most sport launches I would not expect it to be much of a factor but on a high angle agressive launch I could see it pushing the nose over and releasing the line. Again, that is subjective with no practical experience.

In both cases we are talking about agressive, high angle launches where I think these might be a issue. In more "sport" oriented launches I would not expect these to be major factors.