Boni, no irritation whatsoever
, totally agree with you that aikido has answers for multiple opponents whereas grappling does not. Same with weapons, you are dead if you grapple before dealing with that knife or whatever.
I don't have much experience in real fights, knock on wood, but my sense is that if either fighter has a bit of takedown experience and wants to take it to the ground, there is a very good chance that it is going to the ground. From there, unless you can get up and away instantly, it is the grappler's world.
Just my uninformed opinion, could be wrong