If Trump would have been smarter, the democratic institutions would have fallen one by one within the two terms which he would had. The supreme court (is still affected by his choices), the Senate, the house (both still more or less 50:50 split), the military and the executive (which both bled a lot). By now, he would prepare to change the constitution like Putin abd friends did.

As a German I am not in the position to tell this is a fault in the American people, but saying the US institutions and habits right now are strong enough is to survive a Hitler is just wrong.

You need to fight for democracy every day!