No, actually, because the barbarian loot is all 2h axes and maces.
Think of it like this -
An enemy dies, and a RNG roll happens.
That RNG roll determines what item type is going to drop.
After that, it rolls for rarity.
After that, it rolls for stats and stat values.
SO!
Kill>Roll type>Roll rarity>Roll stats>Final drop.
What does this mean?
Kill>Item is rolled as a 2h mace or axe>rarity is rolled as unique>you get barbarian weapon with stats rolled.
Why doesn’t this affect your druid loot? Because it rolled as a 2H Axe or Mace, which Druids don’t have a unique of in the first place, which means it would have just been a white/blue/yellow otherwise.
Now, if it was Kill>roll item type (helm)>roll rarity unique and it ends up being a Barbarian helm, that’s different! Different because then it could have potentially been a druid helm but is skewed to have barbarian loot in the roll table! That’s a problem, sure, more potential options!
But it isn’t like that. How many barbarian non-2h uniques have you gotten? Dunno about you, but mine have all been 2h hammers and axes.