One way to see that philosophy is exceptional is that we have serviceable explicit understandings of math and natural science, even formalizations in the forms of axiomatic set theory and Solomonoff Induction, but nothing comparable in the case of philosophy. (Those formalizations are far from ideal or complete, but still represent a much higher level of understanding than for philosophy.)
If you say that philosophy is a (non-natural) science, then I challenge you, come up with something like Solomonoff Induction, but for philosophy.
One way to see that philosophy is exceptional is that we have serviceable explicit understandings of math and natural science, even formalizations in the forms of axiomatic set theory and Solomonoff Induction, but nothing comparable in the case of philosophy. (Those formalizations are far from ideal or complete, but still represent a much higher level of understanding than for philosophy.)
If you say that philosophy is a (non-natural) science, then I challenge you, come up with something like Solomonoff Induction, but for philosophy.