You are really glad, that I cannot queue because no one accepts me for keys because i am not a dh. Why are you so spiteful. Why not enabling every tank to perform good?
DH is a special case, since it only has one tank and one DPS spec. So one of them being craptastic means the impact is a lot harsher than, say, one Rogue or one Warrior spec being crap.
As I said, whoever thought having only two specs was a good idea needs to be fired.
And shadow priests have only had one dps spec forever but nobody cares when that blows hot and very very cold 3x per expansion. DH tanks being OP wasn’t a plan, it was a happy accident.
Blood seems pretty rough around the edges this season. Reverting the armor nerf from 8.1 would probably help with the damage intake at least. The nerf was never really justified, as the main reason why Blood was powerful in BfA season 1 was the Bonestorm talent, which was nerfed as well. The nerf to armor was just overkill in my opinion.