
Originally Posted by
Hitei
Being a hypocrite, or even actively working against your previous goals doesn't mean you suddenly no longer count as part of that faction. The distinction here is formal, you have to actually leave the faction. Ireland didn't just stop being the UK when they had an uprising in 1916, they stopped being the UK in 1921 when they formalized a self-governance treaty and became the Irish Free State.
Vol'jin (and players) in open rebellion against the Horde and the Horde's warchief, working with Alliance didn't suddenly become not-Horde. Alleria was still a part of the Army of the Light despite actively using the Void and being jailed for it.
The Ethereum using the Void doesn't make them not still Ethereum if they haven't actually renounced it and decided to become something else.
As Viridiel pointed out above, we already knew that the Shadowguard are some sort of sub-faction of the Ethereum because Saprish was still titled Ethereum-Lord. Even if the entire rest of the Ethereum consider the Shadowguard traitors and Saprish and his group were banished, they're still a traitorous group of Ethereum, because they have not forsaken that identity.