I think the point that you are making — that even if Streams are meant to be efficient on paper, but reality is different because of bugs in implementation — is

I think the point that you are making — that even if Streams are meant to be efficient on paper, but reality is different because of bugs in implementation — is an interesting one that moves on the discussion! Surprised to hear you were downvoted for it. Personally, I don't think that's what the other comment was getting at though, as they were commenting on efficiency regards to syntax.