EdgarAllenSnow,
worthy subject will be rewarded financially in the real world and pay taxes.
By 'worthy', I presume you mean having worth or value? Are you counting only taxes paid to the Exchequer? Do you see no value in anything else? (I wonder whether all the taxes paid by the bankers and hedge fund managers make up for all the debt they have landed the rest of us with?)
A person's value to society is not measured solely in what they contribute in taxes. Some of the most valuable roles in society do not pay much and some of those that pay huge amounts are least valuable.
If a history or philosophy graduate can't get a job other than flipping burgers does that mean that the study of history or philosophy has no value? I don't think so.
There is much more to life than earning money and those who learn for the sake of learning, or who work in creative roles, preserve and develop our culture just as much as those who learn for the sake of furthering science or engineering and probably a lot more than those who learn only for the sake of filling their bank accounts.
The article you referred to also says:
In contrast, opting for a degree in history, linguistics, English or Celtic studies adds a premium of less than £100,000 to lifetime earnings.
Taking into account the loss of earnings while studying for three or four years and the loan plus interest to be paid back, no-one would make an economically 'rational' decision to study that kind of subject. Should they, in your view, therefore disappear? That would be a huge loss to our civilisation. The idea that a subject is not 'worthy' because it doesn't figure in (current) job markets is blinkered to say the least.