I am not questioning the importance of philosophy, but the use of the label “philosophical” together with “fundamental”. If someone draw a map of human knowledge, mathematics and biology and physics and history would form wedges starting from well-established facts near the center and reaching more recent and complex theories further away; philosophy, on the other hand, would be the whole ever receding border region of uncertain conjectures still out of reach of scientific methods. To expand the human knowledge these areas indeed must be explored, but once that happens, some branch of science will claim their possession and there will be no reason to further call them philosophy.
I am not questioning the importance of philosophy, but the use of the label “philosophical” together with “fundamental”. If someone draw a map of human knowledge, mathematics and biology and physics and history would form wedges starting from well-established facts near the center and reaching more recent and complex theories further away; philosophy, on the other hand, would be the whole ever receding border region of uncertain conjectures still out of reach of scientific methods. To expand the human knowledge these areas indeed must be explored, but once that happens, some branch of science will claim their possession and there will be no reason to further call them philosophy.