Every single class this season gets their “new” set for which there are no set dungeons (and Blizzard have no plans to make any). This means every single player is in the same boat, i.e. they need to farm one of the other sets to complete the set dungeon task. DHs are not being targeted specifically.
I’m playing Crusader this season.
I got the AoV set from the Haedrig’s gifts.
I ran the Invoker set dungeon, just like every other season I play Crusader.