I do not see math or physics as a requisite for a philosopher. For example, one can look to the ancient eastern philosophers and see that they possessed a profound perception of the world without any knowledge of modern physics or mathematics. And for those not as philosphically inclined (as well as those suitably apt), knowledge of modern mathematics and physics can only be a good thing, as they are languages of nature. However, I do not see one's philosophy being hampered by lack of knowledge of the fact that rocks of a different size dropped from the top of the tower of Pisa should hit the ground roughly at the same time.