LogFAQs > #910634104

It's not the only reason, but I'm quite sure it it's one of the biggest. The real problem is the response to it. When a group doesn't like pointless forced pandering, it turns into "that group is full of crybaby 'X-ists' so who cares if they don't buy the product." Then many fans, even some people who might not have even been on the complaining side of things, get reasonably pissed off and stop engaging. Telling their fanbase that they're all "inherently misogynistic" for not liking some badly written female superhero is not a good practice.