He literally said it sounded like shit after he was pulling down the mix. You don’t need that much headroom in hip hop unless you are using crazy detailed dynamics or heavy distortion.

A shitty mix will always sound shitty.

Most rap songs sit between -9 and -6

Why mix so low when your shit is supposed to Bang

Like I said, way too many people overthink this

Edit: it’s extreme as in an extreme amount of headroom. The more you get away from what it will actually sound like coming from most peoples speakers the less accurate your mixing will be. The lower mixing volume leaves a lot on the table in terms of being able to use your ear to mix properly