Ehh. I'd say it's more about Arbalest being nearly mandatory in any endgame content with Match Game and barrier champions.
Even then, it's still going to break champion barriers in on shot, so it's not the end of the world. Really, the problem is that that Match Game, champions, and endgame PvE content as a whole really needs a serious retool. But if I remember correctly, the Guardian Games Training playlist is just a 1550 level nightfall with matchmaking and less restrictive modifiers, so maybe the change is on the way.