The class design in BFA have been incredibly unbalanced when it comes to Utility in Dungeons. This is Blizzards fault. They have given some classes tools which are extremely strong in dungeons while others got nothing. How do they expect to create good balance between classes with this design.
There are many examples of this. One is: why play with a fury warrior when you can play with a DH? They both do good dps but that’s not the issue. The DH is bringing so much more utility than the fury warrior. So of course there will be a meta that caters to the DH over the Fury warrior. What else can you expect. It’s an enigma to me how Blizzard can’t see this issue.