I don’t see the problem originating from Congress necessarily being polarized. I think the problem is that corporate and big money interests are too strong, and they fund politicians that will try to divide the people on social issues so that they can distract the people from badness happening on the economic front. In other words, I think we’re seeing a problem with corruption that’s expressing itself as polarization.
Even the term “polarization” can also be used as a trap, because it tends to be used in a way that frames politics as a linear spectrum, and your views are somewhere between these two end points. In reality everything is far more complicated. People have highly nuanced views on many different subjects with good reason, and there’s no way you can easily capture it on one single sliding scale.
You still have spending wars. Politicians are bought and sold every day, and any large company probably donates to politicians of multiple parties.