I mean, didn't the First One's legit make Maldraxxus cause they thought the SL might get fucked by one of their other creations, such as the Light or Void? They kinda shaped everything, and made the Cosmic balance itself.
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It's not hard to believe that N'Zoth went beyond the levels of Argus there tbh. Especially considering he had full control of the Black Empire, and became the strongest Old God as a result.