Yes, watched it with my kids late yesterday afternoon (but skipped the Salem parts). So she's now calledDon't read until you have seen episode 8.
Looks like both our theories fit in. Wanda had dormant abilities (mutant?) that the infinity stone recognised and unlocked. We have also seen the Hex give Monica powers (latent abilities, mutant?). Perhaps a combination of things will be how they start bringing mutants in to the MCU?
Hayward was a MFer. Deliberately showed Wanda Vision's chopped up body and basically goads her in to using her powers. Then he harnessed her powers and creates White Vision, all the while doctoring footage to make Wanda look like the baddie and blame her for stealing Vision's body.
Scarlet Witch
White Vision
So I guess we might be heading in the same direction here as you said


