The LGBT thing is anecdotally true in my experience, and in particular, leaving your home state for college is a good socially-acceptable excuse to leave your home state and meet others you suspect are like you at exactly the same time that you're no longer a minor under your parents' control.
[1]https://www.census.gov/newsroom/press-releases/2018/estimate...
ID/UT/AZ -> Lower/middle class people can no longer afford to live comfortably in California
FL/WA -> People are getting sick of the progressively longer, shittier winters in the midwest/northeast
Interestingly, unlike the other issues you've listed, pro-choice support does not vary a whole lot by age. 63% support from 18-29, 59% for 30-59, and about 57% for everyone older than that (https://www.pewforum.org/fact-sheet/public-opinion-on-aborti...) Whatever causes the difference on that issue is not due to age.
If you look at the 2017 Net Brain Drain it shows the following top gainers: - Texas - Virginia - Illinois - Maryland - Colorado - California - New Jersey - New York - Massachussets
Georgia and North Carolina also showed strong gains (along with many other states). That may be blue-leaning but it's not a landslide.
It's more like people are concentrating in the biggest cities generally, and to the degree that there's a blue-shift its that states dominated by their urban population lean democrat and states dominated by a rural population lean republican, so the cultural change follows the demographic shifts rather than driving them.
Of course as pointed out by a sibling, it’s kind of an irrelevant point anyway. The brain migration is away from rural areas (which are red, regardless of state), to big cities (which are blue, regardless of state). That only reenforces the parent’s hypothesis that intellectuals resent the anti-intellectual bent republicans have taken in recent times.
1. https://news.gallup.com/poll/247025/democratic-states-exceed...
Seeing your edit, I can understand why you think it's mostly cultural rather than economic, but I definitely think it's both.
There was plenty of anti-intellectualism in the US in the 70s. The movie "Revenge of the Nerds" wasn't made in a cultural vacuum. Neither was "Animal House". Sports heros have always been worshiped, not so with intellectuals (other than Einstein).
Much of this changed with Bill Gates. He was derided for being a nerd for years, until he made so much money people stopped laughing at him.
You’re not wrong about anti-intellectualism always being a thing though, point taken!
A thing I like to say is that I am proud that I am from Ohio, but I'm also happy I'm not there now.
I’m from Florida but it’s not something I’m proud or not proud of. I’m proud of my kids. I’m proud of my work. I’m proud of my multi decade relationship with my wife. Those are things to be proud of.
When a class I belong to does something great, I feel I can only be proud to be a member of that class to the extent that I contributed to the great thing and that we worked together to achieve something greater than ourselves. Even then I’m proud that “we did that thing” not that “I’m a member of that group.”
Just a thought. I know many people are proud of where they are from but it’s irrational to me.
That said, it’s incredibly underserved and there’s tons of very capable and friendly people.
Edit: maybe I didn’t get the intended point across - I’d ask though, how many people do you know that moved for cultural reasons, especially from hometowns? I’m in the LGBT community where almost every single person I meet has moved for cultural reasons.