Points 2 and 3 seem like mischaracterizations of what they wrote. I'll try to paraphrase based on my interpretation. They seem to implicitly claim that American

Points 2 and 3 seem like mischaracterizations of what they wrote. I'll try to paraphrase based on my interpretation. They seem to implicitly claim that Americans can change things in practice, but that the system can be changed to be made more representative. If someone doesn't believe in that future, they can leave because it's a defeatist view in which nothing they see as possible would really satisfy them. Neither of these points imply Americans can't in practice change things, or that people who don't like the present system should just leave.