That's fair enough. Toph can relate to that feeling. But their situations aren't exactly the same... she has to wonder just how much damage this guy could do to regular-sized people.

"Are you sure it's not dumb?" she says, raising an eyebrow skeptically. "I mean, wanting to know how to fight, I get that. But I dunno how much you're ever gonna do with those two tiny swords, Mosquito. You miiiight wanna consider a change in strategy."