Can someone please tell me why a Trust has an ability that makes your enemies stronger?

I rather enjoy Chacharoon as a character, and I thought I'd call him out on some random derp content that wasn't all that serious, and it wasn't too long until I saw this:

Chacharoon uses Tripe Gripe.
(insert mob name here) gains the effect of Attack Boost. (or whatever that's called)

And I'm like ".........what? Seriously?"

I could see it, if the Trust was so awesome that this needed to be a balancing factor that sometimes he buffs his enemy, but that simply isn't the case.

Chacharoon's physical attacks are rather weak (he uses a stick afterall), his ranged attacks aren't anything to celebrate, and the only thing he can do that does any damage whatsoever, is Pocket Sand which... at 119, hits for ~1500. woo.

Is this a bug? Or maybe the chat log means that Chacharoon's attack was boosted instead of the enemy's?