Show me a moderate Democrat in the US and I’ll show you a moderate right winger in the world. From a world perspective, the US hasn’t had a left leaning president in the last 30 years or more. The US lost its left at some point, and advocating for sensible policies became its new left. Outside looking in, Bernie is a centrist or at most left-of-center.
So if your reference is the full spectrum, the majority of the US population is right wing, a good portion of it radicalized fascists. Now if your reference is the severely skewed Overton window of the US, then yeah, all right wingers are fascists.