If someone is right a lot they are likely not making assertions about things that they know nothing about.
If they are making assertions about a domain and those assertions are correct then that domain is one of their competencies.
"Utterly useless" is a bit extreme but it's a reasonable observation to say it doesn't have predictive power.
Physicists are stereotypically famous for misjudging expertise decay. https://xkcd.com/793/ Some things, like deep intellectual humility, do seem to consistently transfer well between fields. Being "right, a lot", not so consistently.
It’s the whole circle jerk about STEM being the ultimate degree fields in university, while humanities and liberal arts are looked down upon and sneered at.
The humanities is a lot of nonsense. And any STEM student can read a humanity study and understand it and write a valid critique. The opposite is definitely not the case.
STEM students are just better at modelling than non-STEM (on a whole).
As for programmers. I’ve met several who only work in a specific industry for a few years. They have no problems moving to a new industry and within 6 months they understand the new domain and can model that accurately as well.
I have not once met a marketing or hr guy who was able to model anything, let alone a different domain.