So we all Know slamming in BJJ is a big no no. immediate DQ in every tournament I know of. However is this more from a technical perspective or from an unsportsmanlike conduct perspective? The main reason I question it is due to the liberal slamming rules in different wrestling variations like catch, greco, and freestyle. Not to mention its usage in MMA. All three allow slamming yet don't seem to run the injury rate you'd expect from something like that. ( that I know of ) Is slamming illegal due to the position you land inside the guard being very vulnerable to serious injury? or is it just because its a cheap low technical way to pass a guard- like small joint manipulation?