Indeed, the past 30 years has seen a consistent expansion of rights and autonomy and relaxation of social rules, and happiness has been declining pretty consistently the whole time: https://www.washingtonpost.com/business/2019/03/22/americans...
It's also the case that happiness among women has been declining since 1970: https://www.nber.org/system/files/working_papers/w14969/w149.....
One supposes it's easier to be happy as a conservative woman in 2022 given that identifying as such likely means you're sanguine about Roe --- which is a point even the IFS article makes.
Also, it's not an isolated finding. The finding that conservatives are happier is consistently replicated (and long before 2022).
It uses data from a survey commissioned by the Mormon church and does not account for any confounding factors.
Yougov is a surveys for hire company.
So, yeah, it’s a survey run by the Mormon church.
But, more importantly, the conclusions drawn from it by IFS are simply not academically rigorous.
Unlike the sibling comment here, I'm not trying to disqualify the underlying survey, just to point out that it's framing in the article you cited is heavily motivated; countervailing results or analysis presumably would not be allowed to run on the IFS website.
IFS is "heavily motivated" compared to who exactly? Would New America or whoever NPR and the NYT turn to for analysis ever run with a similar story? The notion that increased autonomy and reduced social restriction is an unalloyed good is almost axiomatic among the folks who run every mainstream intellectual institution that isn't expressly conservative. It's the closest a lot of these folks have to a religion. They're highly motivated not to publish contrary evidence.
For what it's worth, most of my conservative friends would strongly disagree with you about the importance of individual autonomy!
If you are a woman in a country that is increasingly oppressing women, it seems it goes without saying that the women most at peace with that state of affairs are the women supportive of that oppression. I'm sure this is as true of the USA as it is of Iran.
[edit to add] One can be conservative in a liberal environment, but to be liberal in a conservative place such as Iran has dire consequences. The only people being imposed on are the ones not free to live to their choosing, so there is no equivalent to forcing upon a conservative in the way conservative laws force upon non-conservatives (that I am aware of)
In reality, most people don't know what choices will make them happy. How could they? And even if they did, they wouldn't know how to get from Point A to Point B, or have the willpower and discipline to stick to it. They need society to develop generational knowledge about those things, socialize children and young people to understand that learning, and socially reinforce good choices. And frankly liberals know that because in other respects, they support societal intervention to protect people from bad choices and help them make good ones. They just have this huge blind spot. The act like the young adult who needs society to protect them from predatory lenders doesn’t need protection from people who might exploit them in other ways. Or that the person who needs education and social pressure when it comes to sugary soft drinks doesn’t need it when it comes to far more impactful decisions about how to live.
And that's before we get to externalities. That's another concept liberals understand but pretend has no application to social norms and behaviors. As if divorce or drug use only affect the individual and not people around them.
Additionally, lots of things have been happening in the last 30 years. The erosion of reproductive rights has been a slow process happening since right after Roe. Income inequality has been rising. Etc.
If you look at another proxy for privilege, education, the trend runs in the opposite direction. Only 31% of women with only a high school education say feminism has helped them, versus 55% of those with a college education: https://www.pewresearch.org/social-trends/2020/07/07/a-centu...
The alternative read of the data, which I suspect is more accurate, is that increased rights and autonomy disproportionately benefits high status women (e.g. pursuing interesting careers, etc). Lower status women, meanwhile, disproportionately suffer the burdens (decreased pressure for men to make commitments and support families).
Pew surveys are much more sophisticated and do differentiate between some of those finer points that you mentioned.
Also, conservative women being happy is not surprising. This is because happiness breeds conservatism. Why? Because you're happy, and you want to keep that status quo. If you were unhappy, you'd want to change things to what you're happy with. People may overlook this, because they typically use the terms conservative and liberal as historical egos, rather than their root meanings.