I have a theory that most STEM people simply don't think like most humanities people, literally at a neurological level. (I edited my post to add some thoughts around that, possibly after you replied.)
STEM work rarely comes off that way to me. The only time it looks to me like the person is going out of their way to be obtuse and technical, is some higher math stuff (which is a known thing and acknowledged even by some mathematicians). This includes the stuff from entirely different parts of STEM that I don't understand at all.