Part of the problem with nerd culture becoming popular culture is that nerd news is big now but people commenting on it know nothing of the history of these nerdy stories. This isn’t the first time Thor has become a woman. He’s even been a frog and an alien. Owing to how they structured the Thor powers to work (they come with the hammer) body swapping Thor has been a common plot. Sometimes played for comedy, sometimes played for drama, sometimes played for an obvious lack of ideas in the writing room. And like convenience store burritos this too shall pass.
The “comic” conventions don’t even have comic books for sale these days. They are dominated by adults in trick or treat costumes, getting the autographs of the actors who portrayed the characters in the MOVIES and TV shows based on books and comics.
This “nerd chic” is a hipster marketing plan, it isn’t genuine fandom.