Oh, I agree. Any retconning or "course correction" will take a while to play out enough to wash the bad taste out of people's mouths.
That said, I worry about our fandom when people take these properties so seriously that death threats and wishing malice on writers and editors who disagree with their cherished vision of what the character should be.
I briefly glanced at a synopsis of a video for just this subject the other day (I think the title was "Fandom is Broken"). As I recall, the main point was that fans are not artists and creators, but consumers. The properties do not belong to them, therefore, they cannot dictate how or when or why. Their only choice is to consume or not. Death threats, etc., are not only inappropriate and wrong-headed they are counterproductive and feed into whatever negative stereotypes still remain for geeks.
I made my case why I thought it was a bad move. But at the end of the day, I do not own Marvel. They can do as they please. I will be sad, but I will cherish the previous 75 years' legacy.