I feel that nerdy stuff became trendy with Big Bang Theory and MCU movies. I remember thinking that was a good thing but now I know better. What is weird is that once nerd culture became mainstream and it became fashionable to say you read comic books or played video games that is when the attacks on nerds (especially white males) started in full force.
Why do you think that it happened that way. Partly due to the large number of feminists who weren’t real fans getting involved in the hobbies. But I’m still surprised to this day how it all went down and definitely miss the days when you were made fun of for liking these things.
To be fair, I know a lot of people who are smart, but dumb. It's unfortunately a state of being for a lot of nerds.
That being said, I've only known a handful of "Sheldons." And even my fellow nerds have a hard time putting up with them.