Well...by that logic, there is no indication that Warlocks lost Meta because of Dh.
Because Blizzard official justifaction wasn't that they were removing it to give to Dh, but rather that Demo warlocks
"Over the years we strayed too far from this design, to the extent that Demonology gameplay was defined more by the Warlock becoming a demon. Legion provides a fitting opportunity for us to realign the spec around its core function of mastering control of demons, not transforming into them."
May i ask why this matters?Yeah, they built them on Argus, not on Azeroth, and they're not seen piloting those mechs on Azeroth. Again, if you start seeing lore figures piloting the Lightforged Warframe above Stormwind or Orgrimmar, then you'd have an argument.
On Draenor.
It's not "other races", its the hero/champion, and a highly trained Orc on an alternate world. Again, if you start seeing Lightforged Draenei piloting Lightforged Warframes on Azeroth, then we'll have something to talk about.
Why matters that is on Argus or Draenor?You have NOn-Goblin/gnomes piloting robots, that are better then whatever Gnomes/goblins could build.
.