How much poking he's done and how much of a stablizing influence he is on his brothers, I think. Ryouma might not have started manipulating Micchy yet, but he does benefit from Takatora considering him the one with the answers. And as Takatora's brother, Kouta will always be able to get his attention.

Hopefully Micchy wouldn't ask a question using that phrasing, since I could easily see Kouta protesting that he's not on any side (because there are no sides, but Micchy would not understand it that way).

(Takatora would argue that Kouta's job is unimportant, and Kouta could use some of Akira's thoughts on work as ammo.)