Steve
Mostly Harmless
Judoka sometimes sign up for BJJ competitions, both gi and no-gi. I've even seen catch wrestlers put a gi on and try gi BJJ.What are you on about? Where did you get that stupid idea from? Certainly nothing I have posted.
Finger locks would be less than half of one percent of Aikido. If grappling was removed from BJJ there wouldn't be much left.
Jiu Jitiero sometimes sign up for judo competitions. Catch wrestlers, Jiu Jitiero and judoka compete in no-gi submission wrestling tournaments. Sambo practitioners will join in sometimes, as well.
All of the above move into and out of different rule sets. And they are at no point trying to injure the other person, but they are trying to hurt them.
I understand that the OP references MMA. But, we've gone now down a slight tangent where we have a style which purports to avoid testing because it's against the philosophy of the art. Doesn't that just feel odd to everyone?
As I said before, it's just human nature, and while I could buy that the majority of aikidoka aren't interested in competition, it is unlikely to the point of being impossible that there are no aikidoka interested in competition or testing their art. I completely understand and respect that MMA is its own animal. But there are many venues where grappling skills can be tested and refined.