Do you have any links to any articles?
From the research I've read, PhD students in the field (was lucky to meet and talk to a few at other mental health care centers), a lot of the research on mental health care is focused on GABA.
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1471-4159....
http://science.sciencemag.org/content/343/6171/675
https://academic.oup.com/ijnp/article/16/6/1309/753308
This seems relevant, but likewise, shooting in the dark:
https://www.frontiersin.org/articles/10.3389/fendo.2013.0005...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2001237/
https://doi.org/10.1016/j.neuron.2007.10.016
The overall picture seems to be local overgrowth/overconnectivity and global/cortico-co-cortical underconnectivity (especially to the frontal lobe). Cortex tissue appears to implement universal epistemic circuits, since they are known to learn arbitrary functions e.g. one can rewire visual input to the auditory cortex in animals and they learn to see. So, too much of those circuits might both imply heightened focus on the details and more intrinsic reward (=reward from pattern prediction/completion for information gain/exploration) which might as well explain the overall difference in value function, deemphasizing reward from social and normative things by relative magnitude. Norms and social stuff is rather processed frontally and subcortically in the insula and amygdala, AFAIK, but there is no reason to believe this is not also partly wired into the cortex too. Evolution has likely encoded most functions all over the place as it likes to do with the genome itself.
Well, we are also hardwired to like chocolate, but if we eat too much of it, then it becomes a disorder.
I was imprecise about the word "enjoyment". What I meant was simply attainment of reward signals. But reward signals do not necessarily imply happiness. At minimum they shape what feels like the right thing to do. At maximum they cause euphoria. E.g. a person with obsessive-compulsive disorder will repeat the same sequence of actions, say, 100 times a day, and each time it will feel like the right thing to do, but such a person will not find much enjoyment.
I suspect that in neurotypical people, the processing of social information (dominance relations, social status, norms, nurture, grooming, communication, gossiping etc.), always feels like the right thing to do, from birth onward, so their neuronal circuits are finely attuned to computations in that domain.
In the absence of such reward signals, the circuits are not trained for such things, and what remains is epistemic circuitry: Building models of the world by approximating/predicting how it works based on accumulated information.
(All of this ignores, of course, the entire neuroscience literature on this topic, which identified e.g. differences in synaptic density in people with ASD; though perhaps the increased value of non-social things comes from more circuits doing epistemic computation, but I'm just shooting in the dark really…)