I’ve asked this before, and had no takers: can you point me to a single story, just one, in which the “fact” that Wanda and Pietro come from a Jewish background is in any way relevant?

I don’t think you can. So far as I can see, no such story exists. So this feeling of Jewish empowerment exists solely in the minds of readers who projected it onto those characters via the background of Magneto. So eliminating that link doesn’t actually eliminate anything tangible, just an idea that some people had in their minds rather than anything on the page.

Wanda and Pietro are still Roma, in fact they’re more legitimately Roma now, as they’re no longer Jewish kids brought up by a Roma family, but legitimate members of the Roma people. That’s a background that informed a whole lot of stories over the years, so that all needed to remain in place regardless of whatever else we might do.