Oh my, there’s quite a barrel-full of assumptions in this question, Wassan — not least the fact that there are a great many famous philosophers either still alive or in living memory. But I shall take the question in the spirit it was intended, which is to wonder about the decline in philosophy as a discipline more broadly.
A century ago, physics breakthroughs came in rapid sequence. There was quantum mechanics and Einstein’s theories of space and time, lots of new particles, two new nuclear forces, and eventually the standard model of particle physics. This progress and its technological applications commanded respect, if not outright fear.