The thing is, they seem to believe that their ideology and their ideology alone is what determines what a real American is. That doesn't denote what a real American is, or what being loyal to the country is. They are loyal to an ideology, to a party. They are not loyal to our country and our values, despite their claims.
When it was revealed that Russians actively interfered in our election (Not claiming any kind of collusion with this, just that we know Russians interfered), in the face of indesputable proof of this, they just flat out started JUSTIFYING the interference. Thinking that foreign influence in our election is perfectly fine is... decidedly not American.
They are loyal to their party, to their president. We are loyal to our country.