They can always claim the consequences were unintentional, but that doesn’t make them less unbelievably convenient for the people who say they had no intention of causing them.
It really depends what you want to believe doesn't it. Purely asserting it is obvious because you believe it to be so, isn't proof that it was deliberate. As I previously said there has been a lot written about the law of unintended consequences and many cases where it wasn't obvious, it seems you haven't cared to read any of it, otherwise you wouldn't have this attitude.