And that's exactly what martial arts (and certainly budo) isn't. That's what middle schoolers do in the basement.
Arguably, the middle schoolers in the basement are ahead of much of the aikido world in their training methodology.
I think the real issue here is: everyone who's criticizing these training exercises really ought to be posting exactly what they do that's better. Preferably, they should also state what their training allows them to do that an untrained person could not. Grapple with a keikogi? Grapple without? Strike? Grapple and strike (MMA)? Fence with swords? What?