Wanda never pretended to be anything, let alone a Mutant!
That entire premise makes no sense. It especially makes no sense if someone knows Wanda's history from the beginning! But, alas, today, so few do. Fewer more even seem to care.
Wanda had been hunted and persecuted most of her young life for being different, a Mutant (at that point anyways), and she would not have wanted to "pretend" to be one for any reason, good or bad!
That is just lazy, careless, uninformed writing!
Arrrgggh!