This is like the BJJ in law enforcement example. You can use BJJ as a cop, but it puts you in a seriously screwed up position tactically, it exposes your firearm and then you have the problem of being on the ground to get picked off by the opponents friends. Believe it or not, there are lots of reasons to not go to the ground in a fight, once again, the UFC is not an end all be all example of effectiveness in martial arts, it highly favors grappling and ground fighting because you cannot strike the back of the head, the spine, a downed fighter, there's no head butting, no slamming a fighter on the ground, etc. Can you slam someone in Judo? Yes, I said this. If you need to go for the slam, then you use it. Once again, this is an attempt to force a square peg into a round hole. All of these techniques are situational and the Aikido complements the Judo, its not trying to replace it. BJJ has no striking, do we compare it to striking arts and say "well since it has no strikes, this system is imaginary", no, you train strikes, the striking complements the BJJ.