Well, yes, but the problem is that (unlike Dual EC-DRBG) other people can also exploit these things when open. For instance, I suppose, would the USA be better if Project Zero shipped all their stuff to the NSA and they both kept it quiet or would the USA be better if they fixed these things.

The point is to gain differential advantage. When you're the rich guy you don't want everyone's doors to be unlockable. When you're the poor guy you do. The USA is the rich guy.