Not at all, Anya is his first born child with the love of his life just after the war ended and they wanted to reconstruct their families, Anya and Magda are the first people he thinks about with the word family, of course he also thinks about Wanda, Pietro and Lorna in those terms but Anya was the child he saw being born and grow with him as her Dad, the fact marvel has not tried to bring her back was because she narratively speaking is the "Uncle Ben" of his origin story, her death made a big impact on his way of thinking and relating to the world going forward even if it didnīt directly lead to him deciding to become Magneto. If she was brough back to life again, something not yet possible because as starchilde said, she died a long time ago,before cerebro existed, he would treasure her a lot, maybe even spoil her a little, be it human or mutant, either way he will try to teach her how to survive and defend herself so history doesnīt repeat itself.
I think he mostly remembers Anya around Wanda because he felt equally helpless to save Wanda on the previous months before HoM, just like he was with Anya and thatīs very much the main similarity between them in his mind, that and the tone of their hair I guess.
Exactly
The fact Magneto didnīt complain about Wanda being called a pretender doesnīt make sense when he bassically fought off the X-men to defend Wanda on CC after he worked a lot to be accepted by them. So I can only guess the answer was that "pretender" was an insult that developed between the decimated mutants after it was revealed she was not a mutant in reality.
Now outside narrative, itīs indeed strange that Wanda gets more fire than Cassandra Nova given Nove, killed way more mutants on Genosha than those who lost their powers on decimation.