To the contrary, it happens exactly that fast. https://scholars-stage.org/culture-wars-are-long-wars/
Between 2011 support was 70, 53, 39 for 18-34, 35-54, 55+ age groups. 2021 was 84, 72, 60. So that's ~20 points on 35-54 and 21 on 55+. That's 10 years. The 45+ transition into the 55 and the 25+ into the 35-54, but that doesn't explain the change. Why? Because the 2011 difference between 55+ and 35-54 is 14 points while 2021 it is 12. Even more importantly, the 55+ group in 2021 has a 7 point lead from the 35-55 age group from 2012.
This difference __cannot__ be explained from just people dying and the support "aging in" to the next age bracket. Literally 50% (7 points out of 14) is impossible to explain through an aging process.
Something more is going on, and thus, my claim is unequivocally supported by the data. (Note my claim isn't that specific, it is just that there is more than aging) Yes, culture wars are long, but they are shorter than can be explained from generations alone.
https://news.gallup.com/poll/350486/record-high-support-same...
Or, dare I say, learn what they themselves were wrong about and become right about it.
We vilify politicians when they change direction and make them dance around and mince words, when what they really want to say is "I was wrong before".
We should commend people for updating their beliefs, not condemn. To me, one of the most honorable phrases one can say is "I stand corrected."
To admit they were wrong would be to say everyone who previously voted for them was also wrong. We don't have that much bravery from most of our politicians.
Editing to add: of course, the real reason nobody expects them to ever say they were wrong is because nobody trusts they actually fully believe what they say in the first place.
Do you live on one of the US coasts? Because if so, you are probably right - before Obergefell, most people didn't care about your private life and after Obergefell it could all finally be out in the open. But in a big chunk of this country, it really doesn't matter what the courts decided because there is major political and religious pressure that says that ain't ok. Don't pretend for a moment that a wide swath of states wouldn't send us straight back to 1863 if they could.
I agree with your point, but to be clear, it is not contrary to what I claimed. My claim is about how ethical values change faster than people age. See the reply in [0] or the linked comment there. The claim shouldn't be controversial because it is ridiculous to believe that your beliefs become fixed at some certain age. The fallacy is that people will think "well I update my beliefs but others don't" (i.e. I'm Bayesian, but others are immutable). You're not that unique.
Certainly this change can go in any direction. It is also a common fallacy to believe younger = liberal while older = conservative. While there is correlation, there is not much to suggest causation. Especially considering there are young people that are Republicans and many old people that are Democrats. We can argue nuance, but that's a different claim. I don't think most people have a good understanding of the demographics of voters[1] and instead focus on what data they want to see. Some of that complexity may be illustrated in looking at Figure 3 (education) closely. The most apparent differential is graduate level education. If you look at the top part carefully you'll see that there's a subtle distinction between completion of a college education vs not and the main difference is in graduate education, which is a much smaller number of people. The graph can be hard to read because the size of each bin is directly proportional to the education level (largest bin is H.S. (~80% of Americans) or less and postgrad is smallest (~5% of Americans if counting professional degrees)). Also take specific note at the differentials in the bottom plot as there is inferential race based data.
Basically, I'm saying it's a bit complex and people are trying to overly simplify the problem. I even think your claim of coast vs central is a point, but I'm not sure it really discredits the claim which is independent of party affiliation or if someone is rural or urban (which is highly correlated with cost vs central).
Oversimplification won't give you an approximate answer, but often will lead you in the wrong direction.
[0] https://news.ycombinator.com/item?id=39082963
[1] https://www.pewresearch.org/politics/2023/07/12/demographic-...