Hello. I'm from Germany and I have bad news for you. If our own history taught me anything, it's this: When there is a critical mass of citizens (including military personnel) who are willing to ignore common societal values and at the same time there is a corrupt justice system which can just bend the law to their will, there is very little in the way to full scale fascism. You guys have the groundwork for this right in front of your face. Your supreme court is only inches away from fulfilling that role and the last election showed that a majority of people are already blindsided enough to wholeheartedly believe the bullshit that they are being fed.
So please don't take this lightly. Democracy is not for granted and it can be taken away. It's a slow process up to a point where things fall in place and then it happens very quickly. In Germany the rise of the Nazis didn't happen over night. Warning signs were there from the first world war on, and the slow erosion of society along with economic factors was a key element. Hitler himself was widely regarded as a loud mouthed clown with little chance to actually accomplish anything.
The erosion part has been going on in the US for decades now. This time, most of the puzzle pieces needed are already in place.
And about the "they are incompetent, it won't be that bad" argument. They don't need competence to break things when they are in power. Breaking things is precisely what these people are looking for. Destruction of democratic values, economic instability, fear, poverty, chaos and social unrest are the key to more power. You just need to look at the designated cabinet positions. Those candidates were specifically chosen to fuck things up in the worst way imaginable. This is not a coincidence. This is a recipe taken right from the fascist's handbook.
That depends on the timescale you are considering. Most of the people who would tell you otherwise because they were suffering in WW2 are dead by now. If you have spent your entire life in a comparatively stable and safe environment (like I did), you might assume that things can't get that bad.
I think an assumption like that is dangerous, because it gives you a false sense of security