Okay, pay attention to the context of that statement.
A straight up comic identical interpretation of Clea is not happening.It's also based on an assumption that given the changes to Dormamu and the dark dimension, they'd probably reinterpret Clea as a more Antichrist like figure, born into the mortal world and oblivious to her own nature to begin with, and is currently just seen as another of the wizards.
It's at odds at with everything they've established about Dormamu and the dark dimension in the MCU; he's a more an all consuming lovecraftian like entity there and the dark dimension is not hospitable to anything not him or a mindless one, so you can't have normal people just living there.