I think you missed his point (whether it's strong or not). He's saying there's an irony in the idea of focusing on proper appearance to the person on the phone

I think you missed his point (whether it's strong or not). He's saying there's an irony in the idea of focusing on proper appearance to the person on the phone when the boundaries of what's appropriate for loud speakerphone calls in a public environment have been lowered too far. Like worrying about whether you look nice while walking off a cliff. I think that's the point, whether one agrees with him or not.