Or the restriction never existed in the case of Dragons being able to use Arcane Magic, they just don't.Same reason many class restrictions existed some races just aren’t made for X power and dragons could be the same which is why they rarely go beyond there flight powers.
As the lore moves forward and things get retconned these restrictions go away which is why I asked if they could always do so or if it was new.
If it is the gauntlet, one has to wonder where it came from. Its a Titan artifact to be sure but what was the purpose for and how did Deathwing I mean Neltharion get a hand on it.So in Dragonflight questing, there is a small questline about there being "something" underground that is able to mind control draconic creatures.
Did someone restart Neltharion's work on the command artifact, or did Neltharion himself restart work on it as Deathwing? If he could somehow reach the Isles from Deepholm...