It seems as though the two types of work outs are contradictory in a sense that one is designed for extreme cardio conditioning, and the other for pure strength. That being said, which is the proper balance of cross fit and strength training. This question is more inclined to the experienced weight lifters and strength coaches.
I’m not so concerned with the label or name of the work out, but I agree that there is a fine line between cardio and strength. I was always taught to work out as hard as possible so it seems that doing an exercise till one passes out night not be the solution to gaining strength. It can only offer endurance qualities. Just brainstorming here .
Thanks for your replies!