It's strange though, it is not like people reject all scientific concepts—even if it does contract their "gut" feeling or impression. For instance, I don't think too many people would reject the notion that stuff is made up of tiny bits of stuff called "atoms" that are too small to see. No one will attack you for claiming that water isn't actually a basic substance on its own, but rather it composed of two hydrogen atoms and one oxygen atom. Nobody gets death threats for saying that sunlight, heat, radio waves are actually all the same thing (even though intuitively they seem pretty different).
Eh, I think there's plenty of people that reject science whenever it will run contrary to certain ideological positions they hold. Some of your examples would be seen as mere trivia to most people, so they would be ambivalent towards them; note, I'm saying you're correct that they don't outright
reject those things, but they also are not implicitly
accepting them either, they just literally don't care because it doesn't contradict any of their held beliefs.
The moment something contradicts a held belief, all science will be thrown out the window. Look at the rejection of climate science as a perfect example. Even cigarettes causing cancer was denied for decades, and still is by a few people (I know some in my family; most don't talk about it publicly anymore, but in private, they deny that it causes cancer and think it's some government conspiracy theory to make more money on taxing cigarettes).
I guarantee you, that if someone figures out how to politicize atoms or molecules, people will deny those things as well. Or if not believing in those things were necessary to maintain some other personal belief that one holds. An example would be people who throw away everything we know about geology, physics, etc, because they have a certain belief about the age of the earth that is impossible to maintain unless they jettison everything we know in science and replace it with pseudoscience.
For subjectivist audiophiles, the problem is they want to believe that their ultra expensive setup was worth the money, or alternatively, there is also a tribalistic explanation; if you've spent years learning all sorts of woo-woo online about audio, and believe that you've become part of some "elite community" of "audio experts", the last thing you want to face is that all of this was a waste of time and none of the things you view as "knowledge" and "expertise" is real, so you start isolating yourself and only hanging out with other subjectivists and never expose yourself to alternate views from outside of the tribe. Contrast this with "imposter syndrome", which is something that real experts often feel because they know enough to know that their knowledge barely scratches the surface of what is the full body of science on a given topic, so sometimes they may feel lack of confidence to speak as an authority on something, even though they may know more than most.