no

this way of thinking, is not very useful and can be pretty harmful, just because something is imperfect doesn't mean it's fully broken. Just because people have always manipulated democracy doesn't mean it "basically just shadow government".

And sure, the US is a very bad case, _especially_ in recent years. But also let's not forgot that for most of it's history just one of the countless scandals of Trump would have been enough to highly risk impeachment for a president and be equal to political suicide. I.e. there has been quite a bit of limits on corruption and influences from behind the scene. It's just that the US went and broke itself. And yes a two party system was never truly democratic, it's still better then a one party system nor the same as a full shadow government.

Which brings us to another point, there never was "the" shadow government, just many different people which had way to much influence behind the scene in not so democratic ways. A shadow government implies some form of organization/structure which actually governs and then puppets in front, but that was never really the case in the US AFIK. Even today it isn't as a lot of the escalating corruption is just pretty much out in the open by the governing people, instead of in any shadow, by people not in a official position.