I have always been fascinated by how some folks can make big claims without knowing squat about the subject. OP, you bandy around terms like bsgs and kangaroo like they are some kind of magic that can crack any encryption just like that. Do you even know what these methods represent and what they are capable of doing?
If you are really interested in learning about this kind of stuff, I would suggest asking questions about things you dont understand before making such outlandish claims.
That are simplified words of other guys here in another topic. If you want to battle about what they are saying you are free to go.
Nonsense is when you score my knowledge without knowing what I actually know. Talking simple does not mean that someone is dumb.