It was one of the various reasons people gave for voting for him. Virtue signalling celebrities and PC thugs calling the shots. Another reason was the rustbelts feeling that they'd been abandoned. Another was the corruption of Clinton. Some people had the same view as George Galloway, that the Democrats seemed hell bent on war with Russia.
From all the programmes I've seen where people have stated their reasons for voting for him, you can't just insist that they're all liars and are white supremacists.