The progressive movement is not representative of the whole Democratic Party (it’s widely liberals vs conservatives, not progressives)

Republicans also don’t simply roll everything back that democrats do, as you can see with tariffs

Moderates can be found to have ideas from more than simply two camps. In fact there are many different ideas and movements in the US (liberals, conservatives, progressives, libertarians, neolibs, neocons, social democrats, classical liberalism, …)