The Ruinous Powers don’t care and have plenty of xenos followers (plus they’re literally just interdimensional xenos according to, you know, the Emperor, and he’s kind of right)
The Traitor Legions just kept their Imperial biases but they’re not the Ruinous Powers themselves.
Finally, something that the Imperium and the Ruinous Powers can agree on.
The Ruinous Powers don’t care and have plenty of xenos followers (plus they’re literally just interdimensional xenos according to, you know, the Emperor, and he’s kind of right)
The Traitor Legions just kept their Imperial biases but they’re not the Ruinous Powers themselves.