Wandering traders re-leash llamas

It's kind of silly that the trader can just lose a companion so easily. I know he doesn't actually travel to get to you (he just materializes from thin air), but theoretically, he is supposed to have crossed great distances to trade with you, and yet he always seems to lose his companions when he is around the player. Is it because he is anxious around us and that makes him prone to accidents? I mean, sometimes? Sure, but for every trader? All the time? Oh, come on! Or maybe he loses llamas all the time, but always seem to arrive in your base with two of them, for absolutely no reason other than dumb luck. Anyway, my point is, have them be able to re-leash their llamas. It makes perfect sense. It shouldn't be hard to implement. Think about poor mr. Wandering T.