Honeslty I think that is a divide Fans do to themselves, I know plenty of X-Fans(I am an X-Fan Myself since the Pryde of the X-Men Arcade game days) both here on CBR and in the Real world at comic shops that Truly Do Love Wanda and her Character. Anytime I talk to them they always blame Bendis and Joe Quesada for the events of M-Day more then on Wanda cause in their opinions like mine the writing was SO Bad and such a blasphemy against Wanda's it is hard to consider those books even respectable.
Also Joe Quesada and Marvel by what has been told where already planning on doing reduced mutants long before HoM cause they thought their where to many to tell good stories or the whole copyright issues still going on at that time by what we have heard over the years. The killing of 16 million mutants on Genosha was already a thing done by a real villian by choose in Cassandra Nova, but you never hear much about her or that event as much as you do HoM.
Honestly it is perception and what fans truly care about when reading these stories. Most X-Fans on CBR are great and caring fans and it is more then just one group of fans that start debates on these stories it is other fans as well, so it just the nature of CBR to start debates over stories.
But it Hardly Reflects the real world responses to these stories, in a strange twist of faith beyond what I have seen, it seems those stories unlike on CBR Debates, have only enhanced Wanda's polulatiry cause after that is seems online net fans just dive right into Wanda Lore with Chaos Magic, Mount Wundagore, Chthon, Nexus Beings, the Avengers, Magic and More.
So while many Wanda Fans don't for good reason like those stories and CBR have overly many debates on them, the public seems to have show how to take these negative stories and use them to like Wanda even more, hence the Responses to WandaVision and her place in the MCU and the greater lore of Wanda Being Celebrated being starting to shown in the MCU and Fans are mad-loving talking about it beyond HoM.
Like Always the world is a strange place, but when Love overcomes Darkness like that, it gives me hope then even after such stories like Hom and Dissembles, the vaster majority of Fans seem to stern to Love and greter lore for Wanda then our fears would have thought.
Their is Light from this, is truly Gives me Hope we can even overcome even Wanda's Darker Moments with Love.