Most of philosophy is for natural reasons at least partially a response to what previous people have asserted, so if you want a good understanding of the field

Most of philosophy is for natural reasons at least partially a response to what previous people have asserted, so if you want a good understanding of the field of western philosophy you need the background. If your complaint was actually about it just being old greek guys and nobody from other places then I can just agree, it's really just western philosophy that's taught under the name "Philosophy"