Philosophy’s real problem is that it spun off all its useful and productive branches. Science used to be part of philosophy; now it’s a separate discipline. Theology and psychology were branches of (meta)physics, and now they’re separate fields. Computer science has split from logic. Math is its own thing. Grammar split from logic ages ago. There’s very little left for philosophy outside unproductive questions of epistemology (“Are we brains in jars on a shelf?”) or ethical debates. All the real fruit now lies elsewhere.