Of course they do. DKs struggle in terms of damage and survivability for team fights, but pulling someone into a bad position can be a big play on several of the maps.
You never claimed that UHDK was the best or even near the top for high rated BGs. Your video is obviously targeted towards players at the low to mid range who are new to UHDK or are considering playing it because high rated players don’t need guides.
So, here we have Dora, who fails at one of the easiest things to do in life - which is to not be a total ***, saying that the spec you play doesn’t matter at low to mid range while, at the same time, saying UHDK is totally useless regardless of the fact that this is the audience that the video is targeted at.