those skills can also be learned in other ways, including from GCSE, A level, from STEM degrees, and from the university of life.
Writing an essay at GCSE or A level, where the question is set for you, is nothing like writing an extended essay or dissertation of maybe 10,000 words in your third year of a degree, where you are likely to have chosen the subject and planned much of the reading/research yourself.
Humanities students (should) learn how to construct an argument and back it up with evidence, a skill which is sadly lacking today - as evidenced by many MN threads, where opposing views are just shouted down.
My worry is not that too many people are taking Humanities subjects, but that too many Humanities degrees are not teaching students to listen to opposing views and weigh both sides of an argument.
And people can say the country needs people with STEM skills all they like, it won't magically increase students' aptitude and interest. It would have been a waste of everyone's time to try to push me into taking STEM subjects beyond what was compulsory at school.