The interest expense numbers look quite different when normalized to GDP. They were higher in the 1980s and 1990s.
I agree with the premise because in business you can hold more debt resulting in more interest expense while reducing your leverage.
The only way out of our mess is expansion/innovation and before that happens debt figures will grow. You learn a bunch when you work for PE and leverage being one of the biggest areas that is focused on.
The risk however you run into is a downturn which spikes your leverage so thankfully we have Trump in office and not more of the same leftist policies that were sending us to a spiral of death.