Diogenes was literally making a commentary on the Plato's definition of man. This is a fundamental conversation in philosophy which is again, the study of knowledge, reality, and existence.
It sounds like you don't like philosophy and also don't like the definition of philosophy. I find it very attached to my day to day life because I love studying philosophy and regularly am contemplating it. I don't need or want it detached from everyday life and it's weird you suggest that, most of my content is philosophy related.
Maybe it's not in your everyday life because you're not into it. That's fine, but it's weird to try and change the definition of it so you can claim you are. Idk probably some interesting psychology that might explain that 🤷♀️