This is because the humanities got taken over in some sense and filled with mumbo jumbo. Technical people don't want to touch that with a ten foot pole.
Besides, science used to be very much a "thinkers" only thing, because only those people went into studies instead of just being laborers. These were people that would question and ponder the things you mention. These days, STEM is filled with factory widget repeaters that are taught to regurgitate the syllabus and apply it in context so they can be good workers.
> humanities got taken over in some sense and filled with mumbo jumbo
This is exactly the kind of opinion that results from improper familiarization with the various sub-fields of the humanities. Is there bullshit? Yes. Is it typical? Absolutely not.
Besides, science used to be very much a "thinkers" only thing, because only those people went into studies instead of just being laborers. These were people that would question and ponder the things you mention. These days, STEM is filled with factory widget repeaters that are taught to regurgitate the syllabus and apply it in context so they can be good workers.