They swapped to hunter hero power to kinda abuse a "bug"/weird way the Reckless Apprentice works. Basically, it doesn't do quite exactly what it says; it actually only triggers the hero power for each enemy, and only if able to target, uses it on them. So it basically fired the hero power twice (brann) per enemy, without the ability to aim it at them.
I'm not sure it really is an actual bug though; the hunter one is definitely an outlier, but otherwise, it kinda has to account for targetability, since it could potentially be used on any hero power. Again, on hunter one it feels weirder, as it's also direct damage, but in terms of consistency, it does make sense and could be a design choice
I saw that with a paladin somehow, can't remember how they got it but I had a "oh that's cool I guess" moment when they flooded the board with it, so I guess it's not a bug, pretty sure priest would just heal all enemy targets and warlock would just draw lots. They all just trigger and target an enemy if possible. The deal 6 damage to face for shaman's hero is what I wanna see it used with next...
To put it like this, it won't be changed or "fixed"